TY  - JOUR
AU  - Lazarević, Miloš M.
AU  - Ignjatović, Nenad
AU  - Mahlet, Qene
AU  - Bumah, Violet V.
AU  - Radunović, Milena
AU  - Milašin, Jelena
AU  - Uskoković, Dragan
AU  - Uskoković, Vuk
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16513
AB  - Hydroxyapatite (HAp) has been the main protagonist in the quest for an ideal biomaterial for regenerative medicine over the last half a century. To control its properties, this material has commonly been doped with chemical elements other than its natural stoichiometric constituents: Ca, O, P, and H. Here, we report on the first analysis of the biological response to germanium-doped hydroxyapatite (Ge-HAp). Cytotoxicity, osteogenic differentiation induction, and colony formation potential were measured on dental pulp stem cells, while the antimicrobial effect was assessed against Gram-negative Escherichia coli, Gram-positive methicillin-resistant Staphylococcus aureus (MRSA), and Candida albicans. All analyses were run in comparison to Ge-free HAp. Cell viability was inversely dependent on the nanoparticle concentration and incubation time. Adding Ge to HAp reduced cell viability relative to HAp after 24–72 h incubation periods, but the effect was reversed after longer incubations, when the viability of cells treated with low doses of Ge-HAp exceeded that of HAp-treated cells and became comparable with control culture. Both HAp and Ge-HAp induced mineral formation in the cell culture, but the effect was more pronounced for Ge-HAp. Likewise, relative to both control cells and cells exposed to HAp, Ge-HAp upregulated the expression of all three osteogenic markers analyzed, namely, alkaline phosphatase, RUNX2, and osteocalcin, exerting the key influence on osteogenesis in its early, differentiation stage. The colony formation capacity of stem cells, however, was impaired by HAp and even more so by Ge-HAp. The antimicrobial effect was dependent on the microorganisms tested. Thus, whereas the antimicrobial activity was absent against E. coli, it was evident against MRSA and C. albicans. While the antibacterial activity against MRSA was weakened by the addition of Ge to HAp, the antimycotic activity against C. albicans was intensified with the addition of Ge. These findings demonstrate a significant potential of Ge-doped HAp nanoparticles in regenerative medicine due to their pronounced biocompatibility, osteoinductivity, and antimicrobial activity.
PB  - American Chemical Society (ACS)
T2  - ACS Applied Nano Materials
T1  - Biocompatible Germanium-Doped Hydroxyapatite Nanoparticles for Promoting Osteogenic Differentiation and Antimicrobial Activity
DO  - 10.1021/acsanm.3c05974
UR  - https://hdl.handle.net/21.15107/rcub_dais_16513
ER  - 

@article{
author = "Lazarević, Miloš M. and Ignjatović, Nenad and Mahlet, Qene and Bumah, Violet V. and Radunović, Milena and Milašin, Jelena and Uskoković, Dragan and Uskoković, Vuk",
year = "2024",
abstract = "Hydroxyapatite (HAp) has been the main protagonist in the quest for an ideal biomaterial for regenerative medicine over the last half a century. To control its properties, this material has commonly been doped with chemical elements other than its natural stoichiometric constituents: Ca, O, P, and H. Here, we report on the first analysis of the biological response to germanium-doped hydroxyapatite (Ge-HAp). Cytotoxicity, osteogenic differentiation induction, and colony formation potential were measured on dental pulp stem cells, while the antimicrobial effect was assessed against Gram-negative Escherichia coli, Gram-positive methicillin-resistant Staphylococcus aureus (MRSA), and Candida albicans. All analyses were run in comparison to Ge-free HAp. Cell viability was inversely dependent on the nanoparticle concentration and incubation time. Adding Ge to HAp reduced cell viability relative to HAp after 24–72 h incubation periods, but the effect was reversed after longer incubations, when the viability of cells treated with low doses of Ge-HAp exceeded that of HAp-treated cells and became comparable with control culture. Both HAp and Ge-HAp induced mineral formation in the cell culture, but the effect was more pronounced for Ge-HAp. Likewise, relative to both control cells and cells exposed to HAp, Ge-HAp upregulated the expression of all three osteogenic markers analyzed, namely, alkaline phosphatase, RUNX2, and osteocalcin, exerting the key influence on osteogenesis in its early, differentiation stage. The colony formation capacity of stem cells, however, was impaired by HAp and even more so by Ge-HAp. The antimicrobial effect was dependent on the microorganisms tested. Thus, whereas the antimicrobial activity was absent against E. coli, it was evident against MRSA and C. albicans. While the antibacterial activity against MRSA was weakened by the addition of Ge to HAp, the antimycotic activity against C. albicans was intensified with the addition of Ge. These findings demonstrate a significant potential of Ge-doped HAp nanoparticles in regenerative medicine due to their pronounced biocompatibility, osteoinductivity, and antimicrobial activity.",
publisher = "American Chemical Society (ACS)",
journal = "ACS Applied Nano Materials",
title = "Biocompatible Germanium-Doped Hydroxyapatite Nanoparticles for Promoting Osteogenic Differentiation and Antimicrobial Activity",
doi = "10.1021/acsanm.3c05974",
url = "https://hdl.handle.net/21.15107/rcub_dais_16513"
}

Lazarević, M. M., Ignjatović, N., Mahlet, Q., Bumah, V. V., Radunović, M., Milašin, J., Uskoković, D.,& Uskoković, V.. (2024). Biocompatible Germanium-Doped Hydroxyapatite Nanoparticles for Promoting Osteogenic Differentiation and Antimicrobial Activity. in ACS Applied Nano Materials
American Chemical Society (ACS)..
https://doi.org/10.1021/acsanm.3c05974
https://hdl.handle.net/21.15107/rcub_dais_16513

Lazarević MM, Ignjatović N, Mahlet Q, Bumah VV, Radunović M, Milašin J, Uskoković D, Uskoković V. Biocompatible Germanium-Doped Hydroxyapatite Nanoparticles for Promoting Osteogenic Differentiation and Antimicrobial Activity. in ACS Applied Nano Materials. 2024;.
doi:10.1021/acsanm.3c05974
https://hdl.handle.net/21.15107/rcub_dais_16513 .

Lazarević, Miloš M., Ignjatović, Nenad, Mahlet, Qene, Bumah, Violet V., Radunović, Milena, Milašin, Jelena, Uskoković, Dragan, Uskoković, Vuk, "Biocompatible Germanium-Doped Hydroxyapatite Nanoparticles for Promoting Osteogenic Differentiation and Antimicrobial Activity" in ACS Applied Nano Materials (2024),
https://doi.org/10.1021/acsanm.3c05974 .,
https://hdl.handle.net/21.15107/rcub_dais_16513 .

TY  - CONF
AU  - Lazarević, Miloš M.
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
AU  - Uskoković, Vuk
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15765
AB  - Most of the applications for various forms of ion-doped hydroxyapatite have been geared towards pharmacy, dentistry and medicine. This study presents the first biological, response to germanium-doped hydroxyapatite (Ge-HAp). Viability, osteogenic differentiation induction and colony formation potential of dental pulp stem cells (DPSCs) in the presence of Ge-HAp and pure, Ge-free HAp nanoparticles was assessed. DPSCs were isolated from semiimpacted wisdom teeth extracted from systemically sound patients. MTT was used to determine cell viability after 1, 3, and 7 days of incubation. The effect of Ge-HAp on the expression level of osteodifferentiation markers (RUNX2, ALP, and OCN) was determined using RT-qPCR, and mineralized nodule formation was confirmed using Alizarin Red S staining. The colony-forming unit assay was utilized to evaluate the colony-formation potential of the DPSC. Low dosages of Ge-HAp increased cell viability compared to HAp after a week. Ge-HAp increased cell culture mineralization more than HAp. Ge-HAp substantially upregulated all three osteogenic markers relative to control and Ge-free HApexposed cells. HAp and especially Ge-HAp hindered stem cell colony formation. As demonstrated above, Ge-doped HAp nanoparticles have great promise in regenerative medicine due to their biocompatibility and osteoinductivity.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023
T1  - The osteogenic effect of Germanium-doped hydroxyapatite nanoparticles on dental pulp stem cells
SP  - 67
EP  - 67
UR  - https://hdl.handle.net/21.15107/rcub_dais_15765
ER  - 

@conference{
author = "Lazarević, Miloš M. and Ignjatović, Nenad and Uskoković, Dragan and Uskoković, Vuk",
year = "2023",
abstract = "Most of the applications for various forms of ion-doped hydroxyapatite have been geared towards pharmacy, dentistry and medicine. This study presents the first biological, response to germanium-doped hydroxyapatite (Ge-HAp). Viability, osteogenic differentiation induction and colony formation potential of dental pulp stem cells (DPSCs) in the presence of Ge-HAp and pure, Ge-free HAp nanoparticles was assessed. DPSCs were isolated from semiimpacted wisdom teeth extracted from systemically sound patients. MTT was used to determine cell viability after 1, 3, and 7 days of incubation. The effect of Ge-HAp on the expression level of osteodifferentiation markers (RUNX2, ALP, and OCN) was determined using RT-qPCR, and mineralized nodule formation was confirmed using Alizarin Red S staining. The colony-forming unit assay was utilized to evaluate the colony-formation potential of the DPSC. Low dosages of Ge-HAp increased cell viability compared to HAp after a week. Ge-HAp increased cell culture mineralization more than HAp. Ge-HAp substantially upregulated all three osteogenic markers relative to control and Ge-free HApexposed cells. HAp and especially Ge-HAp hindered stem cell colony formation. As demonstrated above, Ge-doped HAp nanoparticles have great promise in regenerative medicine due to their biocompatibility and osteoinductivity.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023",
title = "The osteogenic effect of Germanium-doped hydroxyapatite nanoparticles on dental pulp stem cells",
pages = "67-67",
url = "https://hdl.handle.net/21.15107/rcub_dais_15765"
}

Lazarević, M. M., Ignjatović, N., Uskoković, D.,& Uskoković, V.. (2023). The osteogenic effect of Germanium-doped hydroxyapatite nanoparticles on dental pulp stem cells. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023
Belgrade : Serbian Ceramic Society., 67-67.
https://hdl.handle.net/21.15107/rcub_dais_15765

Lazarević MM, Ignjatović N, Uskoković D, Uskoković V. The osteogenic effect of Germanium-doped hydroxyapatite nanoparticles on dental pulp stem cells. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023. 2023;:67-67.
https://hdl.handle.net/21.15107/rcub_dais_15765 .

Lazarević, Miloš M., Ignjatović, Nenad, Uskoković, Dragan, Uskoković, Vuk, "The osteogenic effect of Germanium-doped hydroxyapatite nanoparticles on dental pulp stem cells" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023 (2023):67-67,
https://hdl.handle.net/21.15107/rcub_dais_15765 .

TY  - JOUR
AU  - Uskoković, Vuk
AU  - Ignjatović, Nenad
AU  - Škapin, Srečo
AU  - Uskoković, Dragan
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13563
AB  - Hydroxyapatite (HAp) is the major component of all boney tissues in mammals. Because of this omnipresence in the living world, HAp possesses an exceptional biocompatibility. The downside of this omnipresence, however, comes in the form of its mild to moderate biological activities. One means of augmenting these activities involves the doping of HAp with foreign ions. Here, the first synthesis and characterization of HAp doped with germanium ions is being reported. Germanium was deliberately integrated into the crystal lattice of HAp in the form of germanate anions. Approximately two thirds of the germanate ions introduced into the hydrothermal solution got incorporated into the HAp lattice, yielding the approximate stoichiometry of Ca10-x(PO4)5.62+y(GeO3)0.38(OH)2-z. Germanates replaced the phosphates of stoichiometric HAp and induced the expansion of the HAp lattice both along the screw axis of the calcium ion hexagons and in the direction parallel to the basal plane. Simultaneously, the larger size and the triple valency of the germanate ion as compared to the smaller and trivalent phosphates prompted the bond distortion and charge compensation through defect formation, which reduced the crystallinity and increased the microstrain of the HAp lattice. Vibrational spectroscopic analyses corroborated these crystallographic effects by demonstrating the enhanced heterogeneity of the environments surrounding the active modes after germanate ions were incorporated into HAp. Conforming to La Châtelier's principle, this reduction of the crystallographic order increased the capacity of the material for integration of adventitious carbonates. However, the inclusion of germanate ions induced a partial shift of these carbonates to the hydroxyl channel sites, thus decreasing the ratio of the B-type carbonation to the A-type carbonation. Introduced into HAp, germanium acted as a superb regulator of the particle size and morphology, enhancing their fineness and uniformity. Inclusion of germanate ions also increased the electrophoretic mobility and hydrodynamic surface charge density of the particles by reducing their size and by inducing a more stochastic distribution of terminal ionic groups due to the bending of the crystal facets. Overall, the doping of HAp with germanate ions facilitated the production of narrowly dispersed nanorods with a moderately enhanced structural disorder and with a pronounced potential for the biomedical niche. © 2022 The Author(s)
T2  - Ceramics International
T1  - Germanium-doped hydroxyapatite: Synthesis and characterization of a new substituted apatite
SP  - 27693
EP  - 27702
VL  - 48
IS  - 19
DO  - 10.1016/j.ceramint.2022.06.068
UR  - https://hdl.handle.net/21.15107/rcub_dais_13563
ER  - 

@article{
author = "Uskoković, Vuk and Ignjatović, Nenad and Škapin, Srečo and Uskoković, Dragan",
year = "2022",
abstract = "Hydroxyapatite (HAp) is the major component of all boney tissues in mammals. Because of this omnipresence in the living world, HAp possesses an exceptional biocompatibility. The downside of this omnipresence, however, comes in the form of its mild to moderate biological activities. One means of augmenting these activities involves the doping of HAp with foreign ions. Here, the first synthesis and characterization of HAp doped with germanium ions is being reported. Germanium was deliberately integrated into the crystal lattice of HAp in the form of germanate anions. Approximately two thirds of the germanate ions introduced into the hydrothermal solution got incorporated into the HAp lattice, yielding the approximate stoichiometry of Ca10-x(PO4)5.62+y(GeO3)0.38(OH)2-z. Germanates replaced the phosphates of stoichiometric HAp and induced the expansion of the HAp lattice both along the screw axis of the calcium ion hexagons and in the direction parallel to the basal plane. Simultaneously, the larger size and the triple valency of the germanate ion as compared to the smaller and trivalent phosphates prompted the bond distortion and charge compensation through defect formation, which reduced the crystallinity and increased the microstrain of the HAp lattice. Vibrational spectroscopic analyses corroborated these crystallographic effects by demonstrating the enhanced heterogeneity of the environments surrounding the active modes after germanate ions were incorporated into HAp. Conforming to La Châtelier's principle, this reduction of the crystallographic order increased the capacity of the material for integration of adventitious carbonates. However, the inclusion of germanate ions induced a partial shift of these carbonates to the hydroxyl channel sites, thus decreasing the ratio of the B-type carbonation to the A-type carbonation. Introduced into HAp, germanium acted as a superb regulator of the particle size and morphology, enhancing their fineness and uniformity. Inclusion of germanate ions also increased the electrophoretic mobility and hydrodynamic surface charge density of the particles by reducing their size and by inducing a more stochastic distribution of terminal ionic groups due to the bending of the crystal facets. Overall, the doping of HAp with germanate ions facilitated the production of narrowly dispersed nanorods with a moderately enhanced structural disorder and with a pronounced potential for the biomedical niche. © 2022 The Author(s)",
journal = "Ceramics International",
title = "Germanium-doped hydroxyapatite: Synthesis and characterization of a new substituted apatite",
pages = "27693-27702",
volume = "48",
number = "19",
doi = "10.1016/j.ceramint.2022.06.068",
url = "https://hdl.handle.net/21.15107/rcub_dais_13563"
}

Uskoković, V., Ignjatović, N., Škapin, S.,& Uskoković, D.. (2022). Germanium-doped hydroxyapatite: Synthesis and characterization of a new substituted apatite. in Ceramics International, 48(19), 27693-27702.
https://doi.org/10.1016/j.ceramint.2022.06.068
https://hdl.handle.net/21.15107/rcub_dais_13563

Uskoković V, Ignjatović N, Škapin S, Uskoković D. Germanium-doped hydroxyapatite: Synthesis and characterization of a new substituted apatite. in Ceramics International. 2022;48(19):27693-27702.
doi:10.1016/j.ceramint.2022.06.068
https://hdl.handle.net/21.15107/rcub_dais_13563 .

Uskoković, Vuk, Ignjatović, Nenad, Škapin, Srečo, Uskoković, Dragan, "Germanium-doped hydroxyapatite: Synthesis and characterization of a new substituted apatite" in Ceramics International, 48, no. 19 (2022):27693-27702,
https://doi.org/10.1016/j.ceramint.2022.06.068 .,
https://hdl.handle.net/21.15107/rcub_dais_13563 .

TY  - CONF
AU  - Scherba, Ivan
AU  - Kostyk, Lyudmyla V.
AU  - Noga, Henrik
AU  - Uskoković, Dragan
AU  - Bekenov, Lev V.
AU  - Denys, Vitalij
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12092
AB  - Crystals of Ca3Ga2Ge4O14 with the Ca-gallogermanate structure have a unique combination of physical properties - luminescent, laser, resilient, piezoelectric, and acoustic. Disordered trigonal compounds Ca3Ga2Ge4O14 activated with RE ions and transition elements are known as effective
materials of quantum electronics, which combine the functions of generation and transformation of laser irradiation frequency. It stimulated the study of spectral - luminescent properties of transitional and RE metals impurity ions in these materials. However, the electronic structure, matrix luminescence of Ca3Ga2Ge4O14 crystals have not been sufficiently studied. The crystals were grown by Czochralski technique in the atmosphere of argon with adding oxygen using platinum crucible. The X-ray emission spectra of Ga (Ge) and Ce (Eu)LIII-edge in the Ca3Ga2Ge4O14garnet with dopped Ce 3 % and Eu 4% were obtained by a tube-spectrometer with X-ray coordinate detector of the original design. OKα-spectra in the Ca3Ga2Ge4O14garnet were obtained by a SARF -spectrometer. Spectra of the core levels and the valence band in the Ca3Ga2Ge4O14were measured by the “Kratos” X-ray photoelectron spectrometer. The X-ray spectral studies of the Ca3Ga2Ge4O14have shown that the top of the valence band (near the Fermi level) is formed mainly by the outer electron p–states of Ga, Ge, and O, which intensity is sufficiently low. The middle of the valence band is formed by the Ga 3d–states with the О2s–states lying below them. These states are hybridized with the 4р–states of Ga and Ge because of which they are Кβ''–satellite in Кβ2– sub-band of Ga and Ge. The bottom of the valence band is formed by the 3d–states of germanium, which contribution in chemical binding is insignificant. Alignment of the X-ray emission bands of Ga and Ge with photoelectron spectrum of valence electrons of the Ca3Ga2Ge4O14demonstrated satisfactory correspondence.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021
T1  - X-ray properties spectroscopy and electron structure of Ca3Ga2Ge4O14 garnet with dopped Ce (Eu)
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_dais_12092
ER  - 

@conference{
author = "Scherba, Ivan and Kostyk, Lyudmyla V. and Noga, Henrik and Uskoković, Dragan and Bekenov, Lev V. and Denys, Vitalij",
year = "2021",
abstract = "Crystals of Ca3Ga2Ge4O14 with the Ca-gallogermanate structure have a unique combination of physical properties - luminescent, laser, resilient, piezoelectric, and acoustic. Disordered trigonal compounds Ca3Ga2Ge4O14 activated with RE ions and transition elements are known as effective
materials of quantum electronics, which combine the functions of generation and transformation of laser irradiation frequency. It stimulated the study of spectral - luminescent properties of transitional and RE metals impurity ions in these materials. However, the electronic structure, matrix luminescence of Ca3Ga2Ge4O14 crystals have not been sufficiently studied. The crystals were grown by Czochralski technique in the atmosphere of argon with adding oxygen using platinum crucible. The X-ray emission spectra of Ga (Ge) and Ce (Eu)LIII-edge in the Ca3Ga2Ge4O14garnet with dopped Ce 3 % and Eu 4% were obtained by a tube-spectrometer with X-ray coordinate detector of the original design. OKα-spectra in the Ca3Ga2Ge4O14garnet were obtained by a SARF -spectrometer. Spectra of the core levels and the valence band in the Ca3Ga2Ge4O14were measured by the “Kratos” X-ray photoelectron spectrometer. The X-ray spectral studies of the Ca3Ga2Ge4O14have shown that the top of the valence band (near the Fermi level) is formed mainly by the outer electron p–states of Ga, Ge, and O, which intensity is sufficiently low. The middle of the valence band is formed by the Ga 3d–states with the О2s–states lying below them. These states are hybridized with the 4р–states of Ga and Ge because of which they are Кβ''–satellite in Кβ2– sub-band of Ga and Ge. The bottom of the valence band is formed by the 3d–states of germanium, which contribution in chemical binding is insignificant. Alignment of the X-ray emission bands of Ga and Ge with photoelectron spectrum of valence electrons of the Ca3Ga2Ge4O14demonstrated satisfactory correspondence.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021",
title = "X-ray properties spectroscopy and electron structure of Ca3Ga2Ge4O14 garnet with dopped Ce (Eu)",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_dais_12092"
}

Scherba, I., Kostyk, L. V., Noga, H., Uskoković, D., Bekenov, L. V.,& Denys, V.. (2021). X-ray properties spectroscopy and electron structure of Ca3Ga2Ge4O14 garnet with dopped Ce (Eu). in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021
Belgrade : Materials Research Society of Serbia., 101-101.
https://hdl.handle.net/21.15107/rcub_dais_12092

Scherba I, Kostyk LV, Noga H, Uskoković D, Bekenov LV, Denys V. X-ray properties spectroscopy and electron structure of Ca3Ga2Ge4O14 garnet with dopped Ce (Eu). in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021. 2021;:101-101.
https://hdl.handle.net/21.15107/rcub_dais_12092 .

Scherba, Ivan, Kostyk, Lyudmyla V., Noga, Henrik, Uskoković, Dragan, Bekenov, Lev V., Denys, Vitalij, "X-ray properties spectroscopy and electron structure of Ca3Ga2Ge4O14 garnet with dopped Ce (Eu)" in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021 (2021):101-101,
https://hdl.handle.net/21.15107/rcub_dais_12092 .

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Marković, Smilja
AU  - Jugović, Dragana
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/10037
AB  - Functional nanomaterials have held a steady position at the frontier of materials science and engineering in the 21st century. “Molecular Designing of Nanoparticles with Controlled Morphological and Physicochemical Characteristics and Functional Materials Based on Them” was the title of the research project funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia and performed between 2011 and 2019 in the interdisciplinary area of nanoscience and nanotechnologies. Research activities within this program were divided into five interrelated topics: 1) from molecules to nanoparticles; 2) advanced ceramics with improved functional properties; 3) electrode materials for lithium–ion batteries; 4) nano-calcium phosphate in preventive and regenerative medicine; 5) biodegradable microand nano-particles for the controlled delivery of medicaments. This report gives an insight into this bibliographically most impactful Serbian national project on nanotechnologies executed within the aforementioned nine-year cycle, 2011–2019, focusing here only on the results achieved in the past three years. The project provided an outstanding and internationally recognized contribution to synthesis, characterization and functional design of a number of materials systems, including pure and lanthanide–doped hydroxyapatite, zinc oxides, sodium cobaltates, lithium iron pyrophosphates, lithium iron silicates and a number of polymeric systems.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - From molecules to nanoparticles to functional materials
SP  - 1383
EP  - 1403
VL  - 85
IS  - 11
DO  - 10.2298/JSC200426035I
UR  - https://hdl.handle.net/21.15107/rcub_dais_10037
ER  - 

@article{
author = "Ignjatović, Nenad and Marković, Smilja and Jugović, Dragana and Uskoković, Vuk and Uskoković, Dragan",
year = "2020",
abstract = "Functional nanomaterials have held a steady position at the frontier of materials science and engineering in the 21st century. “Molecular Designing of Nanoparticles with Controlled Morphological and Physicochemical Characteristics and Functional Materials Based on Them” was the title of the research project funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia and performed between 2011 and 2019 in the interdisciplinary area of nanoscience and nanotechnologies. Research activities within this program were divided into five interrelated topics: 1) from molecules to nanoparticles; 2) advanced ceramics with improved functional properties; 3) electrode materials for lithium–ion batteries; 4) nano-calcium phosphate in preventive and regenerative medicine; 5) biodegradable microand nano-particles for the controlled delivery of medicaments. This report gives an insight into this bibliographically most impactful Serbian national project on nanotechnologies executed within the aforementioned nine-year cycle, 2011–2019, focusing here only on the results achieved in the past three years. The project provided an outstanding and internationally recognized contribution to synthesis, characterization and functional design of a number of materials systems, including pure and lanthanide–doped hydroxyapatite, zinc oxides, sodium cobaltates, lithium iron pyrophosphates, lithium iron silicates and a number of polymeric systems.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "From molecules to nanoparticles to functional materials",
pages = "1383-1403",
volume = "85",
number = "11",
doi = "10.2298/JSC200426035I",
url = "https://hdl.handle.net/21.15107/rcub_dais_10037"
}

Ignjatović, N., Marković, S., Jugović, D., Uskoković, V.,& Uskoković, D.. (2020). From molecules to nanoparticles to functional materials. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 85(11), 1383-1403.
https://doi.org/10.2298/JSC200426035I
https://hdl.handle.net/21.15107/rcub_dais_10037

Ignjatović N, Marković S, Jugović D, Uskoković V, Uskoković D. From molecules to nanoparticles to functional materials. in Journal of the Serbian Chemical Society. 2020;85(11):1383-1403.
doi:10.2298/JSC200426035I
https://hdl.handle.net/21.15107/rcub_dais_10037 .

Ignjatović, Nenad, Marković, Smilja, Jugović, Dragana, Uskoković, Vuk, Uskoković, Dragan, "From molecules to nanoparticles to functional materials" in Journal of the Serbian Chemical Society, 85, no. 11 (2020):1383-1403,
https://doi.org/10.2298/JSC200426035I .,
https://hdl.handle.net/21.15107/rcub_dais_10037 .

TY  - CONF
AU  - Milović, Miloš
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Kuzmanović, Maja
AU  - Vujković, Milica
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/7047
AB  - Since Padhi et al. reported the electrochemical properties of LiFePO4 in 1997 [1], polyanion cathode materials for lithium-ion batteries attract interest of researchers because of the added safety and higher voltage values in comparison to the oxide analogues with the same M2+/3+ redox pair. The higher safety and higher voltage come from strong covalent bonding within the polyanion units and, over the years, these inherent characteristics have promoted the investigation of different polyanion compounds. Among them, lithium transition-metal silicates, Li2MSiO4, and pyrophosphates, Li2MP2O7, additionally offer the possibility of extraction/ insertion two lithium ions per formula unit thus increasing theoretical capacity. However, unlike their oxide counterparts, polyanion cathodes suffer considerably from low conductivity (both ionic and electronic) which significantly limits their rate performance and therefore application in high power devices. To overcome this obstacle various strategies were developed like minimization of particle size, addition of conductive additives and/or ion doping. In this study, the approach that was used includes preparation of Li2FeSiO4/C, LiFePO4/C a nd L i2FeP2O7/C composites where carbon is obtained by pyrolytical degradation of methylcellulose and in situ during formation of polyanion active material on high temperatures. Methylcellulose, or methyl cellulose ether, is a water-soluble derivative of cellulose with an ability to gel upon heating and reversibly liquefy upon cooling due to the hydrophobic interaction between molecules containing methoxyl groups [2]. Thanks to this outstanding ability, the methylcellulose acts not only as a carbon source, but also as a dispersing agent that enables both the homogeneous deployment of the precursor compounds and the control of active material’ particle growth from the earliest stages of crystallization. This further allowed a significant shortening of high temperature treatment (to several minutes long) with additional decreases of particle agglomeration. Being both simple and inexpensive, the described method is also beneficial for commercial purposes. The electrochemical and microstructural properties of the obtained powders were examined and compared. Also, the opportunity is taken to discuss potential of a redox couple Fe2+/Fe3+ (Figure 1) in a relation to the crystal structure of a given polyanion cathode.
PB  - [s.l.] : [s.n.]
C3  - Abstracts/Proceedings / mESC-IS 2019 : The Fourth International Symposium on Materials for Energy Storage and Conversion, 7-11 September 2019, Akyaka –Muğla
T1  - Synthesis of cathode composite powders from methylcellulose matrix: Li2FeSiO4/C, Li2FeP2O7/C and LiFePO4/C
SP  - 42
EP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_dais_7047
ER  - 

@conference{
author = "Milović, Miloš and Jugović, Dragana and Mitrić, Miodrag and Kuzmanović, Maja and Vujković, Milica and Uskoković, Dragan",
year = "2019",
abstract = "Since Padhi et al. reported the electrochemical properties of LiFePO4 in 1997 [1], polyanion cathode materials for lithium-ion batteries attract interest of researchers because of the added safety and higher voltage values in comparison to the oxide analogues with the same M2+/3+ redox pair. The higher safety and higher voltage come from strong covalent bonding within the polyanion units and, over the years, these inherent characteristics have promoted the investigation of different polyanion compounds. Among them, lithium transition-metal silicates, Li2MSiO4, and pyrophosphates, Li2MP2O7, additionally offer the possibility of extraction/ insertion two lithium ions per formula unit thus increasing theoretical capacity. However, unlike their oxide counterparts, polyanion cathodes suffer considerably from low conductivity (both ionic and electronic) which significantly limits their rate performance and therefore application in high power devices. To overcome this obstacle various strategies were developed like minimization of particle size, addition of conductive additives and/or ion doping. In this study, the approach that was used includes preparation of Li2FeSiO4/C, LiFePO4/C a nd L i2FeP2O7/C composites where carbon is obtained by pyrolytical degradation of methylcellulose and in situ during formation of polyanion active material on high temperatures. Methylcellulose, or methyl cellulose ether, is a water-soluble derivative of cellulose with an ability to gel upon heating and reversibly liquefy upon cooling due to the hydrophobic interaction between molecules containing methoxyl groups [2]. Thanks to this outstanding ability, the methylcellulose acts not only as a carbon source, but also as a dispersing agent that enables both the homogeneous deployment of the precursor compounds and the control of active material’ particle growth from the earliest stages of crystallization. This further allowed a significant shortening of high temperature treatment (to several minutes long) with additional decreases of particle agglomeration. Being both simple and inexpensive, the described method is also beneficial for commercial purposes. The electrochemical and microstructural properties of the obtained powders were examined and compared. Also, the opportunity is taken to discuss potential of a redox couple Fe2+/Fe3+ (Figure 1) in a relation to the crystal structure of a given polyanion cathode.",
publisher = "[s.l.] : [s.n.]",
journal = "Abstracts/Proceedings / mESC-IS 2019 : The Fourth International Symposium on Materials for Energy Storage and Conversion, 7-11 September 2019, Akyaka –Muğla",
title = "Synthesis of cathode composite powders from methylcellulose matrix: Li2FeSiO4/C, Li2FeP2O7/C and LiFePO4/C",
pages = "42-42",
url = "https://hdl.handle.net/21.15107/rcub_dais_7047"
}

Milović, M., Jugović, D., Mitrić, M., Kuzmanović, M., Vujković, M.,& Uskoković, D.. (2019). Synthesis of cathode composite powders from methylcellulose matrix: Li2FeSiO4/C, Li2FeP2O7/C and LiFePO4/C. in Abstracts/Proceedings / mESC-IS 2019 : The Fourth International Symposium on Materials for Energy Storage and Conversion, 7-11 September 2019, Akyaka –Muğla
[s.l.] : [s.n.]., 42-42.
https://hdl.handle.net/21.15107/rcub_dais_7047

Milović M, Jugović D, Mitrić M, Kuzmanović M, Vujković M, Uskoković D. Synthesis of cathode composite powders from methylcellulose matrix: Li2FeSiO4/C, Li2FeP2O7/C and LiFePO4/C. in Abstracts/Proceedings / mESC-IS 2019 : The Fourth International Symposium on Materials for Energy Storage and Conversion, 7-11 September 2019, Akyaka –Muğla. 2019;:42-42.
https://hdl.handle.net/21.15107/rcub_dais_7047 .

Milović, Miloš, Jugović, Dragana, Mitrić, Miodrag, Kuzmanović, Maja, Vujković, Milica, Uskoković, Dragan, "Synthesis of cathode composite powders from methylcellulose matrix: Li2FeSiO4/C, Li2FeP2O7/C and LiFePO4/C" in Abstracts/Proceedings / mESC-IS 2019 : The Fourth International Symposium on Materials for Energy Storage and Conversion, 7-11 September 2019, Akyaka –Muğla (2019):42-42,
https://hdl.handle.net/21.15107/rcub_dais_7047 .

TY  - JOUR
AU  - Shcherba, I. D.
AU  - Antonov, V. N.
AU  - Zhak, O. V.
AU  - Bekenov, L. V.
AU  - Kovalska, M. V.
AU  - Noga, Henrik
AU  - Uskoković, Dragan
AU  - Yatcyk, B. M.
PY  - 2019
UR  - http://physics.lnu.edu.ua/jps/2019/2/abs/a2301-7.html
UR  - https://dais.sanu.ac.rs/123456789/6952
AB  - The valence band electronic structure of HfFe2Si2 has been established for the first time based on X-ray emission spectroscopy measurements. The band structure and X-ray emission spectra have been also obtained theoretically using the ab initio LMTO method in the non-relativistic approximation. The electron configuration of Si in the compound HfFe2Si2 can be described as $s^{1.1}p^{1.5}$. The theoretical and experimental results are in satisfactory agreement.
PB  - West Ukrainian Physical Society
T2  - Journal of Physical Studies
T1  - Electronic structure and X-ray spectroscopic properties of the HfFe2Si2 compound
VL  - 23
IS  - 2
DO  - 10.30970/jps.23.2301
UR  - https://hdl.handle.net/21.15107/rcub_dais_6952
ER  - 

@article{
author = "Shcherba, I. D. and Antonov, V. N. and Zhak, O. V. and Bekenov, L. V. and Kovalska, M. V. and Noga, Henrik and Uskoković, Dragan and Yatcyk, B. M.",
year = "2019",
abstract = "The valence band electronic structure of HfFe2Si2 has been established for the first time based on X-ray emission spectroscopy measurements. The band structure and X-ray emission spectra have been also obtained theoretically using the ab initio LMTO method in the non-relativistic approximation. The electron configuration of Si in the compound HfFe2Si2 can be described as $s^{1.1}p^{1.5}$. The theoretical and experimental results are in satisfactory agreement.",
publisher = "West Ukrainian Physical Society",
journal = "Journal of Physical Studies",
title = "Electronic structure and X-ray spectroscopic properties of the HfFe2Si2 compound",
volume = "23",
number = "2",
doi = "10.30970/jps.23.2301",
url = "https://hdl.handle.net/21.15107/rcub_dais_6952"
}

Shcherba, I. D., Antonov, V. N., Zhak, O. V., Bekenov, L. V., Kovalska, M. V., Noga, H., Uskoković, D.,& Yatcyk, B. M.. (2019). Electronic structure and X-ray spectroscopic properties of the HfFe2Si2 compound. in Journal of Physical Studies
West Ukrainian Physical Society., 23(2).
https://doi.org/10.30970/jps.23.2301
https://hdl.handle.net/21.15107/rcub_dais_6952

Shcherba ID, Antonov VN, Zhak OV, Bekenov LV, Kovalska MV, Noga H, Uskoković D, Yatcyk BM. Electronic structure and X-ray spectroscopic properties of the HfFe2Si2 compound. in Journal of Physical Studies. 2019;23(2).
doi:10.30970/jps.23.2301
https://hdl.handle.net/21.15107/rcub_dais_6952 .

Shcherba, I. D., Antonov, V. N., Zhak, O. V., Bekenov, L. V., Kovalska, M. V., Noga, Henrik, Uskoković, Dragan, Yatcyk, B. M., "Electronic structure and X-ray spectroscopic properties of the HfFe2Si2 compound" in Journal of Physical Studies, 23, no. 2 (2019),
https://doi.org/10.30970/jps.23.2301 .,
https://hdl.handle.net/21.15107/rcub_dais_6952 .

TY  - CONF
AU  - Shcherba, Ivan D.
AU  - Antonov, Viktor
AU  - Noga, Henrik
AU  - Uskoković, Dragan
AU  - Shpyrka, Zinovija M.
AU  - Yatcyk, Bohdan M.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6681
AB  - Energy structure of the valence band of the Ce2ScSi2 and СеScSi compounds was studied by the methods of the high-energy spectroscopy (XPS, XES and XAS). Dependence of magnetic susceptibility χ(Т) of the Ce2ScSi2 compound within wide temperature range corresponds to the Curie-Weiss law. Based upon temperature dependences χ(Т) and α(Т), together with calculated valence of Ce by the data of the absorption LІІІ –spectroscopy, a conclusion has been made on the existence of the fluctuating transition, «State of intermediate valence - Condo-systems", in the Ce2ScSi2 compound. The calculations of electron energy bands E(k) and partial DOS for Ce2ScSi2 and СеScSi compounds were performed by the semi relativistic linear muffin-tin orbital method without considerations of spin-orbit interactions A satisfactory agreement between theoretical and experimental data is achieved.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - X-ray spectra, electron structure and physical properties of the Ce2ScSi2 and СеScSi compounds
SP  - 109
EP  - 109
UR  - https://hdl.handle.net/21.15107/rcub_dais_6681
ER  - 

@conference{
author = "Shcherba, Ivan D. and Antonov, Viktor and Noga, Henrik and Uskoković, Dragan and Shpyrka, Zinovija M. and Yatcyk, Bohdan M.",
year = "2019",
abstract = "Energy structure of the valence band of the Ce2ScSi2 and СеScSi compounds was studied by the methods of the high-energy spectroscopy (XPS, XES and XAS). Dependence of magnetic susceptibility χ(Т) of the Ce2ScSi2 compound within wide temperature range corresponds to the Curie-Weiss law. Based upon temperature dependences χ(Т) and α(Т), together with calculated valence of Ce by the data of the absorption LІІІ –spectroscopy, a conclusion has been made on the existence of the fluctuating transition, «State of intermediate valence - Condo-systems", in the Ce2ScSi2 compound. The calculations of electron energy bands E(k) and partial DOS for Ce2ScSi2 and СеScSi compounds were performed by the semi relativistic linear muffin-tin orbital method without considerations of spin-orbit interactions A satisfactory agreement between theoretical and experimental data is achieved.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "X-ray spectra, electron structure and physical properties of the Ce2ScSi2 and СеScSi compounds",
pages = "109-109",
url = "https://hdl.handle.net/21.15107/rcub_dais_6681"
}

Shcherba, I. D., Antonov, V., Noga, H., Uskoković, D., Shpyrka, Z. M.,& Yatcyk, B. M.. (2019). X-ray spectra, electron structure and physical properties of the Ce2ScSi2 and СеScSi compounds. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
Belgrade : Materials Research Society of Serbia., 109-109.
https://hdl.handle.net/21.15107/rcub_dais_6681

Shcherba ID, Antonov V, Noga H, Uskoković D, Shpyrka ZM, Yatcyk BM. X-ray spectra, electron structure and physical properties of the Ce2ScSi2 and СеScSi compounds. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:109-109.
https://hdl.handle.net/21.15107/rcub_dais_6681 .

Shcherba, Ivan D., Antonov, Viktor, Noga, Henrik, Uskoković, Dragan, Shpyrka, Zinovija M., Yatcyk, Bohdan M., "X-ray spectra, electron structure and physical properties of the Ce2ScSi2 and СеScSi compounds" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):109-109,
https://hdl.handle.net/21.15107/rcub_dais_6681 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Milović, Miloš
AU  - Ivanovski, Valentin N.
AU  - Škapin, Srečo Davor
AU  - Dojčinović, Biljana
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4937
AB  - A new method involving the homogeneous dispersion of precursor compounds inside a methylcellulose matrix is used for the synthesis of a composite powder of Li 2 FeP 2 O 7 and carbon. The properties of carbon-containing and carbon-free powders are studied by X-ray powder diffraction (XRD) including Rietveld refinement, Mössbauer spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), galvanostatic cycling, and electrochemical impedance spectroscopy (EIS). The structure of both powders is refined in a monoclinic framework (space group P2 1 /c). The structural refinement and Mössbauer spectroscopy reveal different degrees of partial occupancy of mixed-occupied sites by lithium. Electrochemical measurements show that the in situ formation of carbon improves capacity (90% of 1-electron theoretical capacity) through decreased charge-transfer resistance. © 2019 Elsevier B.V.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose
SP  - 912
EP  - 919
VL  - 786
DO  - 10.1016/j.jallcom.2019.01.392
UR  - https://hdl.handle.net/21.15107/rcub_dais_4937
ER  - 

@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Milović, Miloš and Ivanovski, Valentin N. and Škapin, Srečo Davor and Dojčinović, Biljana and Uskoković, Dragan",
year = "2019",
abstract = "A new method involving the homogeneous dispersion of precursor compounds inside a methylcellulose matrix is used for the synthesis of a composite powder of Li 2 FeP 2 O 7 and carbon. The properties of carbon-containing and carbon-free powders are studied by X-ray powder diffraction (XRD) including Rietveld refinement, Mössbauer spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), galvanostatic cycling, and electrochemical impedance spectroscopy (EIS). The structure of both powders is refined in a monoclinic framework (space group P2 1 /c). The structural refinement and Mössbauer spectroscopy reveal different degrees of partial occupancy of mixed-occupied sites by lithium. Electrochemical measurements show that the in situ formation of carbon improves capacity (90% of 1-electron theoretical capacity) through decreased charge-transfer resistance. © 2019 Elsevier B.V.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose",
pages = "912-919",
volume = "786",
doi = "10.1016/j.jallcom.2019.01.392",
url = "https://hdl.handle.net/21.15107/rcub_dais_4937"
}

Jugović, D., Mitrić, M., Milović, M., Ivanovski, V. N., Škapin, S. D., Dojčinović, B.,& Uskoković, D.. (2019). Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose. in Journal of Alloys and Compounds
Elsevier., 786, 912-919.
https://doi.org/10.1016/j.jallcom.2019.01.392
https://hdl.handle.net/21.15107/rcub_dais_4937

Jugović D, Mitrić M, Milović M, Ivanovski VN, Škapin SD, Dojčinović B, Uskoković D. Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose. in Journal of Alloys and Compounds. 2019;786:912-919.
doi:10.1016/j.jallcom.2019.01.392
https://hdl.handle.net/21.15107/rcub_dais_4937 .

Jugović, Dragana, Mitrić, Miodrag, Milović, Miloš, Ivanovski, Valentin N., Škapin, Srečo Davor, Dojčinović, Biljana, Uskoković, Dragan, "Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose" in Journal of Alloys and Compounds, 786 (2019):912-919,
https://doi.org/10.1016/j.jallcom.2019.01.392 .,
https://hdl.handle.net/21.15107/rcub_dais_4937 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Milović, Miloš
AU  - Ivanovski, Valentin N.
AU  - Škapin, Srečo Davor
AU  - Dojčinović, Biljana
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4938
AB  - A new method involving the homogeneous dispersion of precursor compounds inside a methylcellulose matrix is used for the synthesis of a composite powder of Li 2 FeP 2 O 7 and carbon. The properties of carbon-containing and carbon-free powders are studied by X-ray powder diffraction (XRD) including Rietveld refinement, Mössbauer spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), galvanostatic cycling, and electrochemical impedance spectroscopy (EIS). The structure of both powders is refined in a monoclinic framework (space group P2 1 /c). The structural refinement and Mössbauer spectroscopy reveal different degrees of partial occupancy of mixed-occupied sites by lithium. Electrochemical measurements show that the in situ formation of carbon improves capacity (90% of 1-electron theoretical capacity) through decreased charge-transfer resistance. © 2019 Elsevier B.V.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose
SP  - 912
EP  - 919
VL  - 786
DO  - 10.1016/j.jallcom.2019.01.392
UR  - https://hdl.handle.net/21.15107/rcub_dais_4938
ER  - 

@article{
author = "Jugović, Dragana and Mitrić, Miodrag and Milović, Miloš and Ivanovski, Valentin N. and Škapin, Srečo Davor and Dojčinović, Biljana and Uskoković, Dragan",
year = "2019",
abstract = "A new method involving the homogeneous dispersion of precursor compounds inside a methylcellulose matrix is used for the synthesis of a composite powder of Li 2 FeP 2 O 7 and carbon. The properties of carbon-containing and carbon-free powders are studied by X-ray powder diffraction (XRD) including Rietveld refinement, Mössbauer spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), galvanostatic cycling, and electrochemical impedance spectroscopy (EIS). The structure of both powders is refined in a monoclinic framework (space group P2 1 /c). The structural refinement and Mössbauer spectroscopy reveal different degrees of partial occupancy of mixed-occupied sites by lithium. Electrochemical measurements show that the in situ formation of carbon improves capacity (90% of 1-electron theoretical capacity) through decreased charge-transfer resistance. © 2019 Elsevier B.V.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose",
pages = "912-919",
volume = "786",
doi = "10.1016/j.jallcom.2019.01.392",
url = "https://hdl.handle.net/21.15107/rcub_dais_4938"
}

Jugović, D., Mitrić, M., Milović, M., Ivanovski, V. N., Škapin, S. D., Dojčinović, B.,& Uskoković, D.. (2019). Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose. in Journal of Alloys and Compounds
Elsevier., 786, 912-919.
https://doi.org/10.1016/j.jallcom.2019.01.392
https://hdl.handle.net/21.15107/rcub_dais_4938

Jugović D, Mitrić M, Milović M, Ivanovski VN, Škapin SD, Dojčinović B, Uskoković D. Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose. in Journal of Alloys and Compounds. 2019;786:912-919.
doi:10.1016/j.jallcom.2019.01.392
https://hdl.handle.net/21.15107/rcub_dais_4938 .

Jugović, Dragana, Mitrić, Miodrag, Milović, Miloš, Ivanovski, Valentin N., Škapin, Srečo Davor, Dojčinović, Biljana, Uskoković, Dragan, "Structural and electrochemical properties of the Li2FeP2O7/C composite prepared using soluble methylcellulose" in Journal of Alloys and Compounds, 786 (2019):912-919,
https://doi.org/10.1016/j.jallcom.2019.01.392 .,
https://hdl.handle.net/21.15107/rcub_dais_4938 .

TY  - DATA
AU  - Milović, Miloš
AU  - Vasić Anićijević, Dragana D.
AU  - Jugović, Dragana
AU  - Anićijević, Vladan J.
AU  - Veselinović, Ljiljana
AU  - Mitrić, Miodrag
AU  - Uskoković, Dragan
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S1293255818308331
UR  - https://dais.sanu.ac.rs/123456789/5971
AB  - Table S1. Lattice and structural parameters of the prepared Li2FeSiO4; Figure S1. Periodic cells used in DFT calculations: a) 32-atom cell, b) 128-atom cell; Estimation of configuration entropy arising from antisite
T2  - Solid State Sciences
T1  - Supplementary information for the article: Milović, M.D., Vasić Anićijević, D.D., Jugović, D., Anićijević, V.J., Veselinović, L., Mitrić, M., Uskoković, D., 2019. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. Solid State Sciences 87, 81–86. https://doi.org/10.1016/j.solidstatesciences.2018.11.008
UR  - https://hdl.handle.net/21.15107/rcub_dais_5971
ER  - 

@misc{
author = "Milović, Miloš and Vasić Anićijević, Dragana D. and Jugović, Dragana and Anićijević, Vladan J. and Veselinović, Ljiljana and Mitrić, Miodrag and Uskoković, Dragan",
year = "2019",
abstract = "Table S1. Lattice and structural parameters of the prepared Li2FeSiO4; Figure S1. Periodic cells used in DFT calculations: a) 32-atom cell, b) 128-atom cell; Estimation of configuration entropy arising from antisite",
journal = "Solid State Sciences",
title = "Supplementary information for the article: Milović, M.D., Vasić Anićijević, D.D., Jugović, D., Anićijević, V.J., Veselinović, L., Mitrić, M., Uskoković, D., 2019. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. Solid State Sciences 87, 81–86. https://doi.org/10.1016/j.solidstatesciences.2018.11.008",
url = "https://hdl.handle.net/21.15107/rcub_dais_5971"
}

Milović, M., Vasić Anićijević, D. D., Jugović, D., Anićijević, V. J., Veselinović, L., Mitrić, M.,& Uskoković, D.. (2019). Supplementary information for the article: Milović, M.D., Vasić Anićijević, D.D., Jugović, D., Anićijević, V.J., Veselinović, L., Mitrić, M., Uskoković, D., 2019. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. Solid State Sciences 87, 81–86. https://doi.org/10.1016/j.solidstatesciences.2018.11.008. in Solid State Sciences.
https://hdl.handle.net/21.15107/rcub_dais_5971

Milović M, Vasić Anićijević DD, Jugović D, Anićijević VJ, Veselinović L, Mitrić M, Uskoković D. Supplementary information for the article: Milović, M.D., Vasić Anićijević, D.D., Jugović, D., Anićijević, V.J., Veselinović, L., Mitrić, M., Uskoković, D., 2019. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. Solid State Sciences 87, 81–86. https://doi.org/10.1016/j.solidstatesciences.2018.11.008. in Solid State Sciences. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_5971 .

Milović, Miloš, Vasić Anićijević, Dragana D., Jugović, Dragana, Anićijević, Vladan J., Veselinović, Ljiljana, Mitrić, Miodrag, Uskoković, Dragan, "Supplementary information for the article: Milović, M.D., Vasić Anićijević, D.D., Jugović, D., Anićijević, V.J., Veselinović, L., Mitrić, M., Uskoković, D., 2019. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. Solid State Sciences 87, 81–86. https://doi.org/10.1016/j.solidstatesciences.2018.11.008" in Solid State Sciences (2019),
https://hdl.handle.net/21.15107/rcub_dais_5971 .

TY  - CONF
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Milović, Miloš
AU  - Ivanovski, Valentin N.
AU  - Škapin, Srečo Davor
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6674
AB  - Fayalite has been found various applications in many fields. Here is presented its use as anode material for lithium ion batteries. The syntheses of Fe2SiO4 and its composite with carbon are conducted through solid-state reaction at 850 °C under inert atmosphere of argon, using cheap and abundant precursors (Fe(NO3)3×9H2O and amorphous silica). Citric acid served as carbon source. The phase-purity of synthesized powders is checked by X-ray powder diffraction. The crystal structure of the powders is refined in orthorhombic Pbnm space group. Half-cell configuration, with lithium metal as counter electrode and fayalite as working electrode, is used for electrochemical measurements: galvanostatic cycling and electrochemical impedance spectroscopy.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - The structure and electrochemical properties of fayalite Fe2SiO4
SP  - 47
EP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_dais_6674
ER  - 

@conference{
author = "Jugović, Dragana and Mitrić, Miodrag and Milović, Miloš and Ivanovski, Valentin N. and Škapin, Srečo Davor and Uskoković, Dragan",
year = "2019",
abstract = "Fayalite has been found various applications in many fields. Here is presented its use as anode material for lithium ion batteries. The syntheses of Fe2SiO4 and its composite with carbon are conducted through solid-state reaction at 850 °C under inert atmosphere of argon, using cheap and abundant precursors (Fe(NO3)3×9H2O and amorphous silica). Citric acid served as carbon source. The phase-purity of synthesized powders is checked by X-ray powder diffraction. The crystal structure of the powders is refined in orthorhombic Pbnm space group. Half-cell configuration, with lithium metal as counter electrode and fayalite as working electrode, is used for electrochemical measurements: galvanostatic cycling and electrochemical impedance spectroscopy.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "The structure and electrochemical properties of fayalite Fe2SiO4",
pages = "47-47",
url = "https://hdl.handle.net/21.15107/rcub_dais_6674"
}

Jugović, D., Mitrić, M., Milović, M., Ivanovski, V. N., Škapin, S. D.,& Uskoković, D.. (2019). The structure and electrochemical properties of fayalite Fe2SiO4. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
Belgrade : Materials Research Society of Serbia., 47-47.
https://hdl.handle.net/21.15107/rcub_dais_6674

Jugović D, Mitrić M, Milović M, Ivanovski VN, Škapin SD, Uskoković D. The structure and electrochemical properties of fayalite Fe2SiO4. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:47-47.
https://hdl.handle.net/21.15107/rcub_dais_6674 .

Jugović, Dragana, Mitrić, Miodrag, Milović, Miloš, Ivanovski, Valentin N., Škapin, Srečo Davor, Uskoković, Dragan, "The structure and electrochemical properties of fayalite Fe2SiO4" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):47-47,
https://hdl.handle.net/21.15107/rcub_dais_6674 .

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Mančić, Lidija
AU  - Vuković, Marina
AU  - Stojanović, Zoran S.
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Jovanović, Sonja
AU  - Veselinović, Ljiljana
AU  - Uskoković, Vuk
AU  - Lazić, Snežana
AU  - Marković, Smilja
AU  - Lazarević, Miloš M.
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://www.nature.com/articles/s41598-019-52885-0
UR  - https://dais.sanu.ac.rs/123456789/6950
AB  - Taking advantage of the flexibility of the apatite structure, nano- and micro-particles of hydroxyapatite (HAp) were doped with different combinations of rare earth ions (RE3+ = Gd, Eu, Yb, Tm) to achieve a synergy among their magnetic and optical properties and to enable their application in preventive medicine, particularly diagnostics based on multimodal imaging. All powders were synthesized through hydrothermal processing at T ≤ 200 °C. An X-ray powder diffraction analysis showed that all powders crystallized in P63/m space group of the hexagonal crystal structure. The refined unit-cell parameters reflected a decrease in the unit cell volume as a result of the partial substitution of Ca2+ with smaller RE3+ ions at both cation positions. The FTIR analysis additionally suggested that a synergy may exist solely in the triply doped system, where the lattice symmetry and vibration modes become more coherent than in the singly or doubly doped systems. HAp:RE3+ optical characterization revealed a change in the energy band gap and the appearance of a weak blue luminescence (λex = 370 nm) due to an increased concentration of defects. The “up”- and the “down”-conversion spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders showed characteristic transitions of Tm3+ and Eu3+, respectively. Furthermore, in contrast to diamagnetic HAp, all HAp:RE3+ powders exhibited paramagnetic behavior. Cell viability tests of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders in human dental pulp stem cell cultures indicated their good biocompatibility.
PB  - Springer Nature
T2  - Scientific Reports
T1  - Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging
SP  - 1
EP  - 15
VL  - 9
IS  - 1
DO  - 10.1038/s41598-019-52885-0
UR  - https://hdl.handle.net/21.15107/rcub_dais_6950
ER  - 

@article{
author = "Ignjatović, Nenad and Mančić, Lidija and Vuković, Marina and Stojanović, Zoran S. and Nikolić, Marko G. and Škapin, Srečo Davor and Jovanović, Sonja and Veselinović, Ljiljana and Uskoković, Vuk and Lazić, Snežana and Marković, Smilja and Lazarević, Miloš M. and Uskoković, Dragan",
year = "2019",
abstract = "Taking advantage of the flexibility of the apatite structure, nano- and micro-particles of hydroxyapatite (HAp) were doped with different combinations of rare earth ions (RE3+ = Gd, Eu, Yb, Tm) to achieve a synergy among their magnetic and optical properties and to enable their application in preventive medicine, particularly diagnostics based on multimodal imaging. All powders were synthesized through hydrothermal processing at T ≤ 200 °C. An X-ray powder diffraction analysis showed that all powders crystallized in P63/m space group of the hexagonal crystal structure. The refined unit-cell parameters reflected a decrease in the unit cell volume as a result of the partial substitution of Ca2+ with smaller RE3+ ions at both cation positions. The FTIR analysis additionally suggested that a synergy may exist solely in the triply doped system, where the lattice symmetry and vibration modes become more coherent than in the singly or doubly doped systems. HAp:RE3+ optical characterization revealed a change in the energy band gap and the appearance of a weak blue luminescence (λex = 370 nm) due to an increased concentration of defects. The “up”- and the “down”-conversion spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders showed characteristic transitions of Tm3+ and Eu3+, respectively. Furthermore, in contrast to diamagnetic HAp, all HAp:RE3+ powders exhibited paramagnetic behavior. Cell viability tests of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders in human dental pulp stem cell cultures indicated their good biocompatibility.",
publisher = "Springer Nature",
journal = "Scientific Reports",
title = "Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging",
pages = "1-15",
volume = "9",
number = "1",
doi = "10.1038/s41598-019-52885-0",
url = "https://hdl.handle.net/21.15107/rcub_dais_6950"
}

Ignjatović, N., Mančić, L., Vuković, M., Stojanović, Z. S., Nikolić, M. G., Škapin, S. D., Jovanović, S., Veselinović, L., Uskoković, V., Lazić, S., Marković, S., Lazarević, M. M.,& Uskoković, D.. (2019). Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging. in Scientific Reports
Springer Nature., 9(1), 1-15.
https://doi.org/10.1038/s41598-019-52885-0
https://hdl.handle.net/21.15107/rcub_dais_6950

Ignjatović N, Mančić L, Vuković M, Stojanović ZS, Nikolić MG, Škapin SD, Jovanović S, Veselinović L, Uskoković V, Lazić S, Marković S, Lazarević MM, Uskoković D. Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging. in Scientific Reports. 2019;9(1):1-15.
doi:10.1038/s41598-019-52885-0
https://hdl.handle.net/21.15107/rcub_dais_6950 .

Ignjatović, Nenad, Mančić, Lidija, Vuković, Marina, Stojanović, Zoran S., Nikolić, Marko G., Škapin, Srečo Davor, Jovanović, Sonja, Veselinović, Ljiljana, Uskoković, Vuk, Lazić, Snežana, Marković, Smilja, Lazarević, Miloš M., Uskoković, Dragan, "Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging" in Scientific Reports, 9, no. 1 (2019):1-15,
https://doi.org/10.1038/s41598-019-52885-0 .,
https://hdl.handle.net/21.15107/rcub_dais_6950 .

TY  - CONF
AU  - Ignjatović, Nenad
AU  - Mančić, Lidija
AU  - Vuković, Marina
AU  - Stojanović, Zoran S.
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Jovanović, Sonja
AU  - Veselinović, Ljiljana
AU  - Lazić, Snežana
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6676
AB  - Hydroxyapatite (HAp) has been widely used as bone reconstruction materials due to their similarity to bone tissue. The improvement of HAp properties was achieved by doping its crystal lattice with different ions. Lanthanides, i.e. Rare Earth Elements (RE) are also suitable for doping HAp. The aim of the presented research was to investigate the possibility of creating lumino-magnetic particles of HAp doped with gadolinium (Gd3+) ions and co-doped with ytterbium/thulium (Yb3+/Tm3+) or europium (Eu3+) ions for potential use in multimodal imaging (MI). Pure HAp (Ca5(PO4)3(OH)), magnetic HAp:Gd (Ca4.85Gd0.15(PO4)3(OH)), and lumino-magnetic HAp:Gd/Yb/Tm (Ca4.85Gd0.03Yb0.1Tm0.02(PO4)3(OH)) and HAp:Gd/Eu (Ca4.94Gd0.02Eu0.04(PO4)3(OH)) particles were synthesized using emulsification process and hydrothermal processing. All synthesized particles had an elongated shape and exhibited a paramagnetic behavior. Reduction of the unit cell volume as a result of replacement of Ca2+ ions by ions with a smaller ionic radius (Gd3+, Yb3+, Tm3+, Eu3+) confirmed by using XRD and Rietveld refined plots. The energy band gap values of the synthesized samples range from 4.93 to 3.18 eV and decrease in the following order: HAp:Gd >HAp>HAp:Gd/Eu>HAp:Gd/Yb/Tm. The results of photoluminescence emission spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu particles showed characteristic transitions of Tm3+ and Eu3+, respectively.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents
SP  - 76
EP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_dais_6676
ER  - 

@conference{
author = "Ignjatović, Nenad and Mančić, Lidija and Vuković, Marina and Stojanović, Zoran S. and Nikolić, Marko G. and Škapin, Srečo Davor and Jovanović, Sonja and Veselinović, Ljiljana and Lazić, Snežana and Marković, Smilja and Uskoković, Dragan",
year = "2019",
abstract = "Hydroxyapatite (HAp) has been widely used as bone reconstruction materials due to their similarity to bone tissue. The improvement of HAp properties was achieved by doping its crystal lattice with different ions. Lanthanides, i.e. Rare Earth Elements (RE) are also suitable for doping HAp. The aim of the presented research was to investigate the possibility of creating lumino-magnetic particles of HAp doped with gadolinium (Gd3+) ions and co-doped with ytterbium/thulium (Yb3+/Tm3+) or europium (Eu3+) ions for potential use in multimodal imaging (MI). Pure HAp (Ca5(PO4)3(OH)), magnetic HAp:Gd (Ca4.85Gd0.15(PO4)3(OH)), and lumino-magnetic HAp:Gd/Yb/Tm (Ca4.85Gd0.03Yb0.1Tm0.02(PO4)3(OH)) and HAp:Gd/Eu (Ca4.94Gd0.02Eu0.04(PO4)3(OH)) particles were synthesized using emulsification process and hydrothermal processing. All synthesized particles had an elongated shape and exhibited a paramagnetic behavior. Reduction of the unit cell volume as a result of replacement of Ca2+ ions by ions with a smaller ionic radius (Gd3+, Yb3+, Tm3+, Eu3+) confirmed by using XRD and Rietveld refined plots. The energy band gap values of the synthesized samples range from 4.93 to 3.18 eV and decrease in the following order: HAp:Gd >HAp>HAp:Gd/Eu>HAp:Gd/Yb/Tm. The results of photoluminescence emission spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu particles showed characteristic transitions of Tm3+ and Eu3+, respectively.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents",
pages = "76-76",
url = "https://hdl.handle.net/21.15107/rcub_dais_6676"
}

Ignjatović, N., Mančić, L., Vuković, M., Stojanović, Z. S., Nikolić, M. G., Škapin, S. D., Jovanović, S., Veselinović, L., Lazić, S., Marković, S.,& Uskoković, D.. (2019). Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
Belgrade : Materials Research Society of Serbia., 76-76.
https://hdl.handle.net/21.15107/rcub_dais_6676

Ignjatović N, Mančić L, Vuković M, Stojanović ZS, Nikolić MG, Škapin SD, Jovanović S, Veselinović L, Lazić S, Marković S, Uskoković D. Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:76-76.
https://hdl.handle.net/21.15107/rcub_dais_6676 .

Ignjatović, Nenad, Mančić, Lidija, Vuković, Marina, Stojanović, Zoran S., Nikolić, Marko G., Škapin, Srečo Davor, Jovanović, Sonja, Veselinović, Ljiljana, Lazić, Snežana, Marković, Smilja, Uskoković, Dragan, "Hydroxyapatite nano particles doped with Gd3+, Yb3+/Tm3+ and Eu3+ as lumino-magnetic multimodal contrast agents" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):76-76,
https://hdl.handle.net/21.15107/rcub_dais_6676 .

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Janković, Radmila
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://pubs.rsc.org/en/content/articlelanding/2019/tx/c9tx00007k
UR  - https://dais.sanu.ac.rs/123456789/4961
AB  - Reconstruction of bone defects with the use of biomaterials based on hydroxyapatite (HAp) has been a popular approach in medicine and dentistry. Most often the process of new bone formation is analyzed with the focus only on the region of the reconstructed defect. The effects of the therapy on distant organs have been rarely reported in literature, especially not in synergy with the exposure to other bioactive chemicals. In this study, reconstruction of the mandibular bone in vivo using poly-lactide-co-glycolide-coated HAp (HAp/PLGA) nanoparticles was monitored with a simultaneous histopathological analysis of distant organs, specifically kidney and liver parenchyma. Heavy metals are among the most prominent environmental pollutants and have a high affinity for the crystal lattice of HAp, where they get incorporated by replacing calcium ions. Lead (Pb) and cadmium (Cd) are two such metals that can be found in food, water and air, but are most commonly present in cigarette smoke, the frequent contaminant of hospital settings in the developing world. A study performed on 24 female Wistar rats demonstrated that the reconstruction of mandibular bone defects using HAp/PLGA particles induced an increase in the content of Ca in the newly created bone without causing any pathological changes to the liver and the kidneys. The presence of Pb and Cd in the defects reconstructed with HAp/PLGA nanoparticles impeded the regenerative process and led to a severe and irreversible damage to the liver and kidney parenchyma.
T2  - Toxicology Research
T1  - Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects
SP  - 287
EP  - 296
VL  - 8
DO  - 10.1039/C9TX00007K
UR  - https://hdl.handle.net/21.15107/rcub_dais_4961
ER  - 

@article{
author = "Ignjatović, Nenad and Janković, Radmila and Uskoković, Vuk and Uskoković, Dragan",
year = "2019",
abstract = "Reconstruction of bone defects with the use of biomaterials based on hydroxyapatite (HAp) has been a popular approach in medicine and dentistry. Most often the process of new bone formation is analyzed with the focus only on the region of the reconstructed defect. The effects of the therapy on distant organs have been rarely reported in literature, especially not in synergy with the exposure to other bioactive chemicals. In this study, reconstruction of the mandibular bone in vivo using poly-lactide-co-glycolide-coated HAp (HAp/PLGA) nanoparticles was monitored with a simultaneous histopathological analysis of distant organs, specifically kidney and liver parenchyma. Heavy metals are among the most prominent environmental pollutants and have a high affinity for the crystal lattice of HAp, where they get incorporated by replacing calcium ions. Lead (Pb) and cadmium (Cd) are two such metals that can be found in food, water and air, but are most commonly present in cigarette smoke, the frequent contaminant of hospital settings in the developing world. A study performed on 24 female Wistar rats demonstrated that the reconstruction of mandibular bone defects using HAp/PLGA particles induced an increase in the content of Ca in the newly created bone without causing any pathological changes to the liver and the kidneys. The presence of Pb and Cd in the defects reconstructed with HAp/PLGA nanoparticles impeded the regenerative process and led to a severe and irreversible damage to the liver and kidney parenchyma.",
journal = "Toxicology Research",
title = "Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects",
pages = "287-296",
volume = "8",
doi = "10.1039/C9TX00007K",
url = "https://hdl.handle.net/21.15107/rcub_dais_4961"
}

Ignjatović, N., Janković, R., Uskoković, V.,& Uskoković, D.. (2019). Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects. in Toxicology Research, 8, 287-296.
https://doi.org/10.1039/C9TX00007K
https://hdl.handle.net/21.15107/rcub_dais_4961

Ignjatović N, Janković R, Uskoković V, Uskoković D. Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects. in Toxicology Research. 2019;8:287-296.
doi:10.1039/C9TX00007K
https://hdl.handle.net/21.15107/rcub_dais_4961 .

Ignjatović, Nenad, Janković, Radmila, Uskoković, Vuk, Uskoković, Dragan, "Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects" in Toxicology Research, 8 (2019):287-296,
https://doi.org/10.1039/C9TX00007K .,
https://hdl.handle.net/21.15107/rcub_dais_4961 .

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Janković, Radmila
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://pubs.rsc.org/en/content/articlelanding/2019/tx/c9tx00007k
UR  - https://dais.sanu.ac.rs/123456789/4847
AB  - Reconstruction of bone defects with the use of biomaterials based on hydroxyapatite (HAp) has been a popular approach in medicine and dentistry. Most often the process of new bone formation is analyzed with the focus only on the region of the reconstructed defect. The effects of the therapy on distant organs have been rarely reported in literature, especially not in synergy with the exposure to other bioactive chemicals. In this study, reconstruction of the mandibular bone in vivo using poly-lactide-co-glycolide-coated HAp (HAp/PLGA) nanoparticles was monitored with a simultaneous histopathological analysis of distant organs, specifically kidney and liver parenchyma. Heavy metals are among the most prominent environmental pollutants and have a high affinity for the crystal lattice of HAp, where they get incorporated by replacing calcium ions. Lead (Pb) and cadmium (Cd) are two such metals that can be found in food, water and air, but are most commonly present in cigarette smoke, the frequent contaminant of hospital settings in the developing world. A study performed on 24 female Wistar rats demonstrated that the reconstruction of mandibular bone defects using HAp/PLGA particles induced an increase in the content of Ca in the newly created bone without causing any pathological changes to the liver and the kidneys. The presence of Pb and Cd in the defects reconstructed with HAp/PLGA nanoparticles impeded the regenerative process and led to a severe and irreversible damage to the liver and kidney parenchyma.
T2  - Toxicology Research
T1  - Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects
SP  - 287
EP  - 296
VL  - 8
DO  - 10.1039/C9TX00007K
UR  - https://hdl.handle.net/21.15107/rcub_dais_4847
ER  - 

@article{
author = "Ignjatović, Nenad and Janković, Radmila and Uskoković, Vuk and Uskoković, Dragan",
year = "2019",
abstract = "Reconstruction of bone defects with the use of biomaterials based on hydroxyapatite (HAp) has been a popular approach in medicine and dentistry. Most often the process of new bone formation is analyzed with the focus only on the region of the reconstructed defect. The effects of the therapy on distant organs have been rarely reported in literature, especially not in synergy with the exposure to other bioactive chemicals. In this study, reconstruction of the mandibular bone in vivo using poly-lactide-co-glycolide-coated HAp (HAp/PLGA) nanoparticles was monitored with a simultaneous histopathological analysis of distant organs, specifically kidney and liver parenchyma. Heavy metals are among the most prominent environmental pollutants and have a high affinity for the crystal lattice of HAp, where they get incorporated by replacing calcium ions. Lead (Pb) and cadmium (Cd) are two such metals that can be found in food, water and air, but are most commonly present in cigarette smoke, the frequent contaminant of hospital settings in the developing world. A study performed on 24 female Wistar rats demonstrated that the reconstruction of mandibular bone defects using HAp/PLGA particles induced an increase in the content of Ca in the newly created bone without causing any pathological changes to the liver and the kidneys. The presence of Pb and Cd in the defects reconstructed with HAp/PLGA nanoparticles impeded the regenerative process and led to a severe and irreversible damage to the liver and kidney parenchyma.",
journal = "Toxicology Research",
title = "Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects",
pages = "287-296",
volume = "8",
doi = "10.1039/C9TX00007K",
url = "https://hdl.handle.net/21.15107/rcub_dais_4847"
}

Ignjatović, N., Janković, R., Uskoković, V.,& Uskoković, D.. (2019). Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects. in Toxicology Research, 8, 287-296.
https://doi.org/10.1039/C9TX00007K
https://hdl.handle.net/21.15107/rcub_dais_4847

Ignjatović N, Janković R, Uskoković V, Uskoković D. Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects. in Toxicology Research. 2019;8:287-296.
doi:10.1039/C9TX00007K
https://hdl.handle.net/21.15107/rcub_dais_4847 .

Ignjatović, Nenad, Janković, Radmila, Uskoković, Vuk, Uskoković, Dragan, "Effects of Hydroxyapatite@Poly-Lactide-Co-Glycolide Nanoparticles Combined with Pb and Cd on Liver and Kidney Parenchyma after the Reconstruction of Mandibular Bone Defects" in Toxicology Research, 8 (2019):287-296,
https://doi.org/10.1039/C9TX00007K .,
https://hdl.handle.net/21.15107/rcub_dais_4847 .

TY  - JOUR
AU  - Milović, Miloš
AU  - Vasić Anićijević, Dragana D.
AU  - Jugović, Dragana
AU  - Anićijević, Vladan J.
AU  - Veselinović, Ljiljana
AU  - Mitrić, Miodrag
AU  - Uskoković, Dragan
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S1293255818308331
UR  - https://dais.sanu.ac.rs/123456789/4560
AB  - Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system.
PB  - Elsevier
T2  - Solid State Sciences
T1  - On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study
SP  - 81
EP  - 86
VL  - 87
DO  - 10.1016/j.solidstatesciences.2018.11.008
UR  - https://hdl.handle.net/21.15107/rcub_dais_4560
ER  - 

@article{
author = "Milović, Miloš and Vasić Anićijević, Dragana D. and Jugović, Dragana and Anićijević, Vladan J. and Veselinović, Ljiljana and Mitrić, Miodrag and Uskoković, Dragan",
year = "2019",
abstract = "Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system.",
publisher = "Elsevier",
journal = "Solid State Sciences",
title = "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study",
pages = "81-86",
volume = "87",
doi = "10.1016/j.solidstatesciences.2018.11.008",
url = "https://hdl.handle.net/21.15107/rcub_dais_4560"
}

Milović, M., Vasić Anićijević, D. D., Jugović, D., Anićijević, V. J., Veselinović, L., Mitrić, M.,& Uskoković, D.. (2019). On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. in Solid State Sciences
Elsevier., 87, 81-86.
https://doi.org/10.1016/j.solidstatesciences.2018.11.008
https://hdl.handle.net/21.15107/rcub_dais_4560

Milović M, Vasić Anićijević DD, Jugović D, Anićijević VJ, Veselinović L, Mitrić M, Uskoković D. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. in Solid State Sciences. 2019;87:81-86.
doi:10.1016/j.solidstatesciences.2018.11.008
https://hdl.handle.net/21.15107/rcub_dais_4560 .

Milović, Miloš, Vasić Anićijević, Dragana D., Jugović, Dragana, Anićijević, Vladan J., Veselinović, Ljiljana, Mitrić, Miodrag, Uskoković, Dragan, "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study" in Solid State Sciences, 87 (2019):81-86,
https://doi.org/10.1016/j.solidstatesciences.2018.11.008 .,
https://hdl.handle.net/21.15107/rcub_dais_4560 .

TY  - JOUR
AU  - Milović, Miloš
AU  - Vasić Anićijević, Dragana D.
AU  - Jugović, Dragana
AU  - Anićijević, Vladan J.
AU  - Veselinović, Ljiljana
AU  - Mitrić, Miodrag
AU  - Uskoković, Dragan
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S1293255818308331
UR  - https://dais.sanu.ac.rs/123456789/4552
AB  - Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system.
PB  - Elsevier
T2  - Solid State Sciences
T1  - On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study
SP  - 81
EP  - 86
VL  - 87
DO  - 10.1016/j.solidstatesciences.2018.11.008
UR  - https://hdl.handle.net/21.15107/rcub_dais_4552
ER  - 

@article{
author = "Milović, Miloš and Vasić Anićijević, Dragana D. and Jugović, Dragana and Anićijević, Vladan J. and Veselinović, Ljiljana and Mitrić, Miodrag and Uskoković, Dragan",
year = "2019",
abstract = "Li2FeSiO4 material, which was prepared by a solid state method, crystallized as monoclinic P21/n polymorph. X-ray diffraction analysis with Rietveld structural refinement indicates specific occupation of Li2 crystallographic site by Fe2+ cation in the amount of 6 atom percents as a result of an antisite defect formation. The exclusive occupation of Li2 position, out of two crystallographic positions Li1 and Li2, by Fe2+ was discussed in relation to the differences that exist in the crystal environment of these positions and further investigated by DFT calculations. It was confirmed that Fe-Li2 substitution is energetically favorable compared to both Fe-Li1 substitution and the pristine crystal. In addition, changes of lattice geometry upon antisite defect formation were analyzed, and the obtained result is discussed in light of various factors (electronic, geometrical and enthropic) that contribute to the overall stability of the system.",
publisher = "Elsevier",
journal = "Solid State Sciences",
title = "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study",
pages = "81-86",
volume = "87",
doi = "10.1016/j.solidstatesciences.2018.11.008",
url = "https://hdl.handle.net/21.15107/rcub_dais_4552"
}

Milović, M., Vasić Anićijević, D. D., Jugović, D., Anićijević, V. J., Veselinović, L., Mitrić, M.,& Uskoković, D.. (2019). On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. in Solid State Sciences
Elsevier., 87, 81-86.
https://doi.org/10.1016/j.solidstatesciences.2018.11.008
https://hdl.handle.net/21.15107/rcub_dais_4552

Milović M, Vasić Anićijević DD, Jugović D, Anićijević VJ, Veselinović L, Mitrić M, Uskoković D. On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study. in Solid State Sciences. 2019;87:81-86.
doi:10.1016/j.solidstatesciences.2018.11.008
https://hdl.handle.net/21.15107/rcub_dais_4552 .

Milović, Miloš, Vasić Anićijević, Dragana D., Jugović, Dragana, Anićijević, Vladan J., Veselinović, Ljiljana, Mitrić, Miodrag, Uskoković, Dragan, "On the presence of antisite defect in monoclinic Li2FeSiO4 – A combined X-Ray diffraction and DFT study" in Solid State Sciences, 87 (2019):81-86,
https://doi.org/10.1016/j.solidstatesciences.2018.11.008 .,
https://hdl.handle.net/21.15107/rcub_dais_4552 .

TY  - JOUR
AU  - Marković, Smilja
AU  - Stojković Simatović, Ivana
AU  - Ahmetović, Sanita
AU  - Veselinović, Ljiljana
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Škapin, Srečo Davor
AU  - Bajuk Bogdanović, Danica
AU  - Janković Častvan, Ivona
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://pubs.rsc.org/en/content/articlelanding/2019/ra/c9ra02553g
UR  - https://dais.sanu.ac.rs/123456789/6272
AB  - ZnO nanopowders were produced using microwave processing of a precipitate and applied as a photoanode for photoelectrochemical water splitting. Two different surfactants, cetyltrimethylammonium bromide (CTAB) as the cationic and Pluronic F127 as the non-ionic one, were employed to in situ adjust the surface-to-bulk defect ratio in the ZnO crystal structure and further to modify the photo(electro)catalytic activity of the ZnO photoanode. The crystal structure, morphological, textural, optical and photo(electro)catalytic properties of ZnO particles were studied in detail to explain the profound effects of the surfactants on the photoanode activity. The ZnO/CTAB photoanode displayed the highest photocurrent density of 27 mA g−1, compared to ZnO (10.4 mA g−1) and ZnO/F127 photoanodes (20 mA g−1) at 1.5 V vs. SCE in 0.1 M Na2SO4 under visible illumination of 90 mW cm−2. A significant shift of the overpotential toward lower values was also observed when photoanodes were illuminated. The highest shift of the overpotential, from 1.296 to 0.248 V vs. SCE, was recorded when the ZnO/CTAB photanode was illuminated. The ZnO/CTAB photoanode provides efficient charge transfer across the electrode/electrolyte interface, with a longer lifetime of photogenerated electron–hole pairs and reduced possibility of charge recombination. The photoconversion efficiency was improved from 1.4% for ZnO and 0.9% for ZnO/F127 to 4.2% for ZnO/CTAB at 0.510 mV. A simple procedure for the synthesis of ZnO particles with improved photo(electro)catalytic properties was established and it was found that even a small amount of CTAB used during processing of ZnO increases the surface-to-bulk defect ratio. Optimization of the surface-to-bulk defect ratio in ZnO materials enables increase of the absorption capacity for visible light, rendering of the recombination rate of the photogenerated pair, as well as increase of both the photocurrent density and photoconversion efficiency.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties
SP  - 17165
EP  - 17178
VL  - 9
IS  - 30
DO  - 10.1039/C9RA02553G
UR  - https://hdl.handle.net/21.15107/rcub_dais_6272
ER  - 

@article{
author = "Marković, Smilja and Stojković Simatović, Ivana and Ahmetović, Sanita and Veselinović, Ljiljana and Stojadinović, Stevan and Rac, Vladislav and Škapin, Srečo Davor and Bajuk Bogdanović, Danica and Janković Častvan, Ivona and Uskoković, Dragan",
year = "2019",
abstract = "ZnO nanopowders were produced using microwave processing of a precipitate and applied as a photoanode for photoelectrochemical water splitting. Two different surfactants, cetyltrimethylammonium bromide (CTAB) as the cationic and Pluronic F127 as the non-ionic one, were employed to in situ adjust the surface-to-bulk defect ratio in the ZnO crystal structure and further to modify the photo(electro)catalytic activity of the ZnO photoanode. The crystal structure, morphological, textural, optical and photo(electro)catalytic properties of ZnO particles were studied in detail to explain the profound effects of the surfactants on the photoanode activity. The ZnO/CTAB photoanode displayed the highest photocurrent density of 27 mA g−1, compared to ZnO (10.4 mA g−1) and ZnO/F127 photoanodes (20 mA g−1) at 1.5 V vs. SCE in 0.1 M Na2SO4 under visible illumination of 90 mW cm−2. A significant shift of the overpotential toward lower values was also observed when photoanodes were illuminated. The highest shift of the overpotential, from 1.296 to 0.248 V vs. SCE, was recorded when the ZnO/CTAB photanode was illuminated. The ZnO/CTAB photoanode provides efficient charge transfer across the electrode/electrolyte interface, with a longer lifetime of photogenerated electron–hole pairs and reduced possibility of charge recombination. The photoconversion efficiency was improved from 1.4% for ZnO and 0.9% for ZnO/F127 to 4.2% for ZnO/CTAB at 0.510 mV. A simple procedure for the synthesis of ZnO particles with improved photo(electro)catalytic properties was established and it was found that even a small amount of CTAB used during processing of ZnO increases the surface-to-bulk defect ratio. Optimization of the surface-to-bulk defect ratio in ZnO materials enables increase of the absorption capacity for visible light, rendering of the recombination rate of the photogenerated pair, as well as increase of both the photocurrent density and photoconversion efficiency.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties",
pages = "17165-17178",
volume = "9",
number = "30",
doi = "10.1039/C9RA02553G",
url = "https://hdl.handle.net/21.15107/rcub_dais_6272"
}

Marković, S., Stojković Simatović, I., Ahmetović, S., Veselinović, L., Stojadinović, S., Rac, V., Škapin, S. D., Bajuk Bogdanović, D., Janković Častvan, I.,& Uskoković, D.. (2019). Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties. in RSC Advances
Royal Society of Chemistry., 9(30), 17165-17178.
https://doi.org/10.1039/C9RA02553G
https://hdl.handle.net/21.15107/rcub_dais_6272

Marković S, Stojković Simatović I, Ahmetović S, Veselinović L, Stojadinović S, Rac V, Škapin SD, Bajuk Bogdanović D, Janković Častvan I, Uskoković D. Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties. in RSC Advances. 2019;9(30):17165-17178.
doi:10.1039/C9RA02553G
https://hdl.handle.net/21.15107/rcub_dais_6272 .

Marković, Smilja, Stojković Simatović, Ivana, Ahmetović, Sanita, Veselinović, Ljiljana, Stojadinović, Stevan, Rac, Vladislav, Škapin, Srečo Davor, Bajuk Bogdanović, Danica, Janković Častvan, Ivona, Uskoković, Dragan, "Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties" in RSC Advances, 9, no. 30 (2019):17165-17178,
https://doi.org/10.1039/C9RA02553G .,
https://hdl.handle.net/21.15107/rcub_dais_6272 .

TY  - CONF
AU  - Marković, Smilja
AU  - Rajić, Vladimir B.
AU  - Stojković Simatović, Ivana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Ivanovski, Valentin N.
AU  - Novaković, Mirjana
AU  - Škapin, Srečo Davor
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6677
AB  - Even has been under study since 1935, zinc oxide (ZnO) based materials still attract a huge scientific attention. Owing to a wide band gap energy (3.37 eV at room temperature) and a large exciton binding energy (60 meV) ZnO has a variety of application, e.g. in electronics, optoelectronics, spintronics and photocatalysis. Besides, it has been shown that zinc oxide-based materials have a great potential as photoelectrocatalysts in the processes of water splitting, yielding an increased both photocurrent density and photoconversion efficiency. However, with a band gap energy of 3.37 eV, ZnO is restricted to absorb UV light only. This restriction can be overcome by modifying optical properties of zinc oxide particles. During the years different approaches have been applied to modify the visible light photocatalytic activity of ZnO materials, for example: (1) metal and nonmetal ion doping, (2) hydrogenation, (3) the incorporation of crystalline defects in the form of vacancies and interstitials, (4) the modification of particles morphology and surface topology, etc.
In this study we employed 3d metal ion substitution to improve visible light-driven photoactivity of zinc oxide particles. We investigated the influence of Fe concentration in Zn1-xFeyO(1-x+1.5y) nanoparticles on crystal structure, textural, optical and photoelectrocatalytic properties. Zn1-xFeyO(1-x+1.5y) nanoparticles with nominally 5, 10, 15 and 20 at.% of Fe ions were synthesized by microwave processing of a precipitate. The crystal structure and phase purity of the samples were investigated by X-ray diffraction, Raman and ATR-FTIR spectroscopy. Mössbauer spectroscopy was carried out to clarify the valence state of the iron ions in the ZnO crystal structure. Effects of the iron ions concentration on particles morphology and texture properties were observed with field emission scanning electron microscopy (FE–SEM), transmission electron microscopy (TEM) with elemental mapping, and nitrogen adsorption–desorption isotherm, respectively. The optical properties were studied using UV–Vis diffuse reflectance and photoluminescence (PL) spectroscopy. Photoelectrochemical activity of the Zn1-xFeyO(1-x+1.5y) samples as anode material was evaluated by linear sweep voltammetry in Na2SO4 electrolyte; the oxygen evolution kinetics were determined and compared. In addition, a series of first principles calculations were performed to address the influence of the iron concentration on the electronic structure of Zn1-xFeyO(1-x+1.5y) samples.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - Point defect-enhanced optical and photoelectrochemical water splitting activity of nanostructured Zn1-xFeyO(1-x+1.5y)
SP  - 54
EP  - 54
UR  - https://hdl.handle.net/21.15107/rcub_dais_6677
ER  - 

@conference{
author = "Marković, Smilja and Rajić, Vladimir B. and Stojković Simatović, Ivana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Ivanovski, Valentin N. and Novaković, Mirjana and Škapin, Srečo Davor and Stojadinović, Stevan and Rac, Vladislav and Uskoković, Dragan",
year = "2019",
abstract = "Even has been under study since 1935, zinc oxide (ZnO) based materials still attract a huge scientific attention. Owing to a wide band gap energy (3.37 eV at room temperature) and a large exciton binding energy (60 meV) ZnO has a variety of application, e.g. in electronics, optoelectronics, spintronics and photocatalysis. Besides, it has been shown that zinc oxide-based materials have a great potential as photoelectrocatalysts in the processes of water splitting, yielding an increased both photocurrent density and photoconversion efficiency. However, with a band gap energy of 3.37 eV, ZnO is restricted to absorb UV light only. This restriction can be overcome by modifying optical properties of zinc oxide particles. During the years different approaches have been applied to modify the visible light photocatalytic activity of ZnO materials, for example: (1) metal and nonmetal ion doping, (2) hydrogenation, (3) the incorporation of crystalline defects in the form of vacancies and interstitials, (4) the modification of particles morphology and surface topology, etc.
In this study we employed 3d metal ion substitution to improve visible light-driven photoactivity of zinc oxide particles. We investigated the influence of Fe concentration in Zn1-xFeyO(1-x+1.5y) nanoparticles on crystal structure, textural, optical and photoelectrocatalytic properties. Zn1-xFeyO(1-x+1.5y) nanoparticles with nominally 5, 10, 15 and 20 at.% of Fe ions were synthesized by microwave processing of a precipitate. The crystal structure and phase purity of the samples were investigated by X-ray diffraction, Raman and ATR-FTIR spectroscopy. Mössbauer spectroscopy was carried out to clarify the valence state of the iron ions in the ZnO crystal structure. Effects of the iron ions concentration on particles morphology and texture properties were observed with field emission scanning electron microscopy (FE–SEM), transmission electron microscopy (TEM) with elemental mapping, and nitrogen adsorption–desorption isotherm, respectively. The optical properties were studied using UV–Vis diffuse reflectance and photoluminescence (PL) spectroscopy. Photoelectrochemical activity of the Zn1-xFeyO(1-x+1.5y) samples as anode material was evaluated by linear sweep voltammetry in Na2SO4 electrolyte; the oxygen evolution kinetics were determined and compared. In addition, a series of first principles calculations were performed to address the influence of the iron concentration on the electronic structure of Zn1-xFeyO(1-x+1.5y) samples.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "Point defect-enhanced optical and photoelectrochemical water splitting activity of nanostructured Zn1-xFeyO(1-x+1.5y)",
pages = "54-54",
url = "https://hdl.handle.net/21.15107/rcub_dais_6677"
}

Marković, S., Rajić, V. B., Stojković Simatović, I., Veselinović, L., Belošević Čavor, J., Ivanovski, V. N., Novaković, M., Škapin, S. D., Stojadinović, S., Rac, V.,& Uskoković, D.. (2019). Point defect-enhanced optical and photoelectrochemical water splitting activity of nanostructured Zn1-xFeyO(1-x+1.5y). in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
Belgrade : Materials Research Society of Serbia., 54-54.
https://hdl.handle.net/21.15107/rcub_dais_6677

Marković S, Rajić VB, Stojković Simatović I, Veselinović L, Belošević Čavor J, Ivanovski VN, Novaković M, Škapin SD, Stojadinović S, Rac V, Uskoković D. Point defect-enhanced optical and photoelectrochemical water splitting activity of nanostructured Zn1-xFeyO(1-x+1.5y). in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:54-54.
https://hdl.handle.net/21.15107/rcub_dais_6677 .

Marković, Smilja, Rajić, Vladimir B., Stojković Simatović, Ivana, Veselinović, Ljiljana, Belošević Čavor, Jelena, Ivanovski, Valentin N., Novaković, Mirjana, Škapin, Srečo Davor, Stojadinović, Stevan, Rac, Vladislav, Uskoković, Dragan, "Point defect-enhanced optical and photoelectrochemical water splitting activity of nanostructured Zn1-xFeyO(1-x+1.5y)" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):54-54,
https://hdl.handle.net/21.15107/rcub_dais_6677 .

TY  - CONF
AU  - Marković, Smilja
AU  - Rajić, Vladimir
AU  - Veselinović, Ljiljana
AU  - Stojković Simatović, Ivana
AU  - Belošević Čavor, Jelena
AU  - Škapin, Srečo Davor
AU  - Kovač, Janez
AU  - Nikolić, Marko G.
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6997
AB  - During the last decade zinc oxide (ZnO) has attracted considerable attention as a promising material for electronic, optoelectronic and spintronic devices. ZnO has a wide bandgap (3.37 eV at room temperature) and relatively large exciton binding energy (60 meV) which enables multifunctional application. Until now ZnO-based materials have been used as UV and blue light emitters, varistors, thermistors, semiconductors, photoanodes, and other. Various approaches have been applied to improve functional properties of zinc oxide, such as: fabrication of ZnO-based heterojunction particles, particles’ surface sensitization, hydrogenation, etc. It has been found that intrinsic defects (vacancies, interstitials and antisites) in the crystal structure of a ZnO strongly influenced its electrical and optical properties. Thus, correlation of the intrinsic defects concentration with optical and electrical properties of ZnO materials is of great importance for their further application in opto-electronic devices. In this study we investigated the influence of intrinsic defects concentration on the optical, electrical and photoelectrocatalytic properties of ZnO materials. To obtain ZnO powder with a high concentration of intrinsic defects microwave processing of precipitate was employed, while for further varying of defects concentration, the powder was thermally treated in three different atmospheres: air, argon and oxygen. The ZnO powder was uniaxially pressed (P = 100 MPa) in cylindrical compacts (R= 6 mm and h approx. 3 mm) which were sintered in different atmospheres by heating rate of 10 °/min up to 1100 °C, and with dwell time of 1 h. To study a crystal structure of ZnO samples XRD and Raman spectroscopy were used, while for microstructural investigation field emission scanning electron micrographs were recorded. Optical properties were studied using UV–Vis diffuse reflectance spectroscopy. To reveal the role of intrinsic defects in ZnO crystal lattice on functional properties, XPS, photoluminescence, electroluminescence and electrochemical impedance spectra were analyzed. A detailed analysis of the experimental results imply that a high concentration of intrinsic defects, in particular oxygen vacancies, is of the greatest importance for tunable light-emitting diode application and significant for the photoanode properties. To support our experimental observation we performed ab initio calculations based on density functional theory (DFT).
PB  - Budapest : [s. n.]
C3  - Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest
T1  - Tuning the optical, electrical and photoelectrocatalytic properties of Zno materials by varying of intrinsic defects concentration
SP  - 11
EP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_dais_6997
ER  - 

@conference{
author = "Marković, Smilja and Rajić, Vladimir and Veselinović, Ljiljana and Stojković Simatović, Ivana and Belošević Čavor, Jelena and Škapin, Srečo Davor and Kovač, Janez and Nikolić, Marko G. and Uskoković, Dragan",
year = "2019",
abstract = "During the last decade zinc oxide (ZnO) has attracted considerable attention as a promising material for electronic, optoelectronic and spintronic devices. ZnO has a wide bandgap (3.37 eV at room temperature) and relatively large exciton binding energy (60 meV) which enables multifunctional application. Until now ZnO-based materials have been used as UV and blue light emitters, varistors, thermistors, semiconductors, photoanodes, and other. Various approaches have been applied to improve functional properties of zinc oxide, such as: fabrication of ZnO-based heterojunction particles, particles’ surface sensitization, hydrogenation, etc. It has been found that intrinsic defects (vacancies, interstitials and antisites) in the crystal structure of a ZnO strongly influenced its electrical and optical properties. Thus, correlation of the intrinsic defects concentration with optical and electrical properties of ZnO materials is of great importance for their further application in opto-electronic devices. In this study we investigated the influence of intrinsic defects concentration on the optical, electrical and photoelectrocatalytic properties of ZnO materials. To obtain ZnO powder with a high concentration of intrinsic defects microwave processing of precipitate was employed, while for further varying of defects concentration, the powder was thermally treated in three different atmospheres: air, argon and oxygen. The ZnO powder was uniaxially pressed (P = 100 MPa) in cylindrical compacts (R= 6 mm and h approx. 3 mm) which were sintered in different atmospheres by heating rate of 10 °/min up to 1100 °C, and with dwell time of 1 h. To study a crystal structure of ZnO samples XRD and Raman spectroscopy were used, while for microstructural investigation field emission scanning electron micrographs were recorded. Optical properties were studied using UV–Vis diffuse reflectance spectroscopy. To reveal the role of intrinsic defects in ZnO crystal lattice on functional properties, XPS, photoluminescence, electroluminescence and electrochemical impedance spectra were analyzed. A detailed analysis of the experimental results imply that a high concentration of intrinsic defects, in particular oxygen vacancies, is of the greatest importance for tunable light-emitting diode application and significant for the photoanode properties. To support our experimental observation we performed ab initio calculations based on density functional theory (DFT).",
publisher = "Budapest : [s. n.]",
journal = "Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest",
title = "Tuning the optical, electrical and photoelectrocatalytic properties of Zno materials by varying of intrinsic defects concentration",
pages = "11-11",
url = "https://hdl.handle.net/21.15107/rcub_dais_6997"
}

Marković, S., Rajić, V., Veselinović, L., Stojković Simatović, I., Belošević Čavor, J., Škapin, S. D., Kovač, J., Nikolić, M. G.,& Uskoković, D.. (2019). Tuning the optical, electrical and photoelectrocatalytic properties of Zno materials by varying of intrinsic defects concentration. in Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest
Budapest : [s. n.]., 11-11.
https://hdl.handle.net/21.15107/rcub_dais_6997

Marković S, Rajić V, Veselinović L, Stojković Simatović I, Belošević Čavor J, Škapin SD, Kovač J, Nikolić MG, Uskoković D. Tuning the optical, electrical and photoelectrocatalytic properties of Zno materials by varying of intrinsic defects concentration. in Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest. 2019;:11-11.
https://hdl.handle.net/21.15107/rcub_dais_6997 .

Marković, Smilja, Rajić, Vladimir, Veselinović, Ljiljana, Stojković Simatović, Ivana, Belošević Čavor, Jelena, Škapin, Srečo Davor, Kovač, Janez, Nikolić, Marko G., Uskoković, Dragan, "Tuning the optical, electrical and photoelectrocatalytic properties of Zno materials by varying of intrinsic defects concentration" in Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest (2019):11-11,
https://hdl.handle.net/21.15107/rcub_dais_6997 .

TY  - CONF
AU  - Scherba, Ivan
AU  - Noga, Henrik
AU  - Antonov, Viktor
AU  - Zhak, Olga
AU  - Uskoković, Dragan
AU  - Jatcyk, Bohdan M.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3668
AB  - We have studied experimentally and theoretically the electronic structure and x-ray absorption spectrum at the R.E.L3 - edge and x-ray emission spectra of Ni and P in the R.E.2Ni12P5 compounds. Crystal structure of the ternary phosphate Ce2Ni12P5 has been refined using X-ray powder diffraction pattern of the single phase sample with the same nominal composition, and the isotopic structure as for earlier known La2Ni12P5-type has been proved: space group P21/m, formula units Z = 2, lattice parameters are a = 1.07809(2) nm, b = 0.36869(1) nm, c = 1.31490(3) nm, b = 107.776(4), residual R-values are RI = 0.0681, RP = 0.0442 , RwP = 0.0603. The theoretical calculations have been carried out by means of the ab initio fully-relativistic spinpolarized Dirac linear muffin-tin orbital method. The calculations show good agreement with the experimental measurements. R.E.LIII - absorption spectra in ternary R.E.2Ni12P5 compounds were obtained at 78K and 300K using a tube spectrometer equipped with an RKD-01 co-ordinate detector. The mixed valence state of Ce and Eu was obtained in the Ce2Ni12P5 and Eu2Ni12P5 compounds.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
T1  - Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds
SP  - 109
EP  - 109
UR  - https://hdl.handle.net/21.15107/rcub_dais_3668
ER  - 

@conference{
author = "Scherba, Ivan and Noga, Henrik and Antonov, Viktor and Zhak, Olga and Uskoković, Dragan and Jatcyk, Bohdan M.",
year = "2018",
abstract = "We have studied experimentally and theoretically the electronic structure and x-ray absorption spectrum at the R.E.L3 - edge and x-ray emission spectra of Ni and P in the R.E.2Ni12P5 compounds. Crystal structure of the ternary phosphate Ce2Ni12P5 has been refined using X-ray powder diffraction pattern of the single phase sample with the same nominal composition, and the isotopic structure as for earlier known La2Ni12P5-type has been proved: space group P21/m, formula units Z = 2, lattice parameters are a = 1.07809(2) nm, b = 0.36869(1) nm, c = 1.31490(3) nm, b = 107.776(4), residual R-values are RI = 0.0681, RP = 0.0442 , RwP = 0.0603. The theoretical calculations have been carried out by means of the ab initio fully-relativistic spinpolarized Dirac linear muffin-tin orbital method. The calculations show good agreement with the experimental measurements. R.E.LIII - absorption spectra in ternary R.E.2Ni12P5 compounds were obtained at 78K and 300K using a tube spectrometer equipped with an RKD-01 co-ordinate detector. The mixed valence state of Ce and Eu was obtained in the Ce2Ni12P5 and Eu2Ni12P5 compounds.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018",
title = "Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds",
pages = "109-109",
url = "https://hdl.handle.net/21.15107/rcub_dais_3668"
}

Scherba, I., Noga, H., Antonov, V., Zhak, O., Uskoković, D.,& Jatcyk, B. M.. (2018). Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
Belgrade : Materials Research Society of Serbia., 109-109.
https://hdl.handle.net/21.15107/rcub_dais_3668

Scherba I, Noga H, Antonov V, Zhak O, Uskoković D, Jatcyk BM. Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018. 2018;:109-109.
https://hdl.handle.net/21.15107/rcub_dais_3668 .

Scherba, Ivan, Noga, Henrik, Antonov, Viktor, Zhak, Olga, Uskoković, Dragan, Jatcyk, Bohdan M., "Crystal structure and X-Ray spectroscopic properties of R.E.2Ni12P5 compounds" in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018 (2018):109-109,
https://hdl.handle.net/21.15107/rcub_dais_3668 .

TY  - CONF
AU  - Marković, Smilja
AU  - Stojković Simatović, Ivana
AU  - Stanković, Ana
AU  - Škapin, Srečo Davor
AU  - Mančić, Lidija
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3631
AB  - Due to their high photoactivity, photostability, chemical inertness, simple syntheses procedures as well as low cost, semiconductor materials such as TiO2, ZnO, V2O5, and SnO2, are recognized as materials with a great potential for photoelectrochemical and photocatalytic applications. In particular, they can be used as photoanode in the process of photoelectrolysis of water, or to initiate decomposition of different organic or biological pollutants in water under light irradiation. Which wavelength of light will be absorbed depends on the semiconductor band gap; semiconductors with a wide band gap (> 3 eV) can absorb light in the UV range only, while those with a narrow band gap (< 3 eV) can be activated by visible light. Current trend in photo(electro)catalysis is to develop efficient semiconductors which can be activated by absorbing natural sunlight. During the years, various approaches have been developed to modify optical properties of semiconductors thus to be capable to absorb sunlight, for example: the incorporation of transition metal ions or defects into the crystal structure, the particles’ surface sensitization, hydrogenation, coupling of semiconductors with different band gap energies, etc.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite
SP  - 151
EP  - 153
UR  - https://hdl.handle.net/21.15107/rcub_dais_3631
ER  - 

@conference{
author = "Marković, Smilja and Stojković Simatović, Ivana and Stanković, Ana and Škapin, Srečo Davor and Mančić, Lidija and Mentus, Slavko and Uskoković, Dragan",
year = "2018",
abstract = "Due to their high photoactivity, photostability, chemical inertness, simple syntheses procedures as well as low cost, semiconductor materials such as TiO2, ZnO, V2O5, and SnO2, are recognized as materials with a great potential for photoelectrochemical and photocatalytic applications. In particular, they can be used as photoanode in the process of photoelectrolysis of water, or to initiate decomposition of different organic or biological pollutants in water under light irradiation. Which wavelength of light will be absorbed depends on the semiconductor band gap; semiconductors with a wide band gap (> 3 eV) can absorb light in the UV range only, while those with a narrow band gap (< 3 eV) can be activated by visible light. Current trend in photo(electro)catalysis is to develop efficient semiconductors which can be activated by absorbing natural sunlight. During the years, various approaches have been developed to modify optical properties of semiconductors thus to be capable to absorb sunlight, for example: the incorporation of transition metal ions or defects into the crystal structure, the particles’ surface sensitization, hydrogenation, coupling of semiconductors with different band gap energies, etc.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite",
pages = "151-153",
url = "https://hdl.handle.net/21.15107/rcub_dais_3631"
}

Marković, S., Stojković Simatović, I., Stanković, A., Škapin, S. D., Mančić, L., Mentus, S.,& Uskoković, D.. (2018). Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 151-153.
https://hdl.handle.net/21.15107/rcub_dais_3631

Marković S, Stojković Simatović I, Stanković A, Škapin SD, Mančić L, Mentus S, Uskoković D. Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:151-153.
https://hdl.handle.net/21.15107/rcub_dais_3631 .

Marković, Smilja, Stojković Simatović, Ivana, Stanković, Ana, Škapin, Srečo Davor, Mančić, Lidija, Mentus, Slavko, Uskoković, Dragan, "Sunlight-driven Photocatalytic and Photo-electrochemical Activity of ZnO/SnO2 Composite" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):151-153,
https://hdl.handle.net/21.15107/rcub_dais_3631 .

TY  - CONF
AU  - Milović, Miloš
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Uskoković, Dragan
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4572
AB  - Within this research the possibility of fluorine doping of the P2 type NaxCo02 powder was examined. As fluorine substitution already proved successful in improving cathode performance of layered lithium-based counterparts, the effects of fluorination on structure and electrochenlical properties ofP2 NaxCo02 were investigated and discussed.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
PB  - Belgrade : Hydrogen Economy Initiative Serbia
C3  - Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018
T1  - Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance
SP  - 98
EP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_dais_4572
ER  - 

@conference{
author = "Milović, Miloš and Jugović, Dragana and Mitrić, Miodrag and Popović, Maja and Rakočević, Zlatko and Uskoković, Dragan",
year = "2018",
abstract = "Within this research the possibility of fluorine doping of the P2 type NaxCo02 powder was examined. As fluorine substitution already proved successful in improving cathode performance of layered lithium-based counterparts, the effects of fluorination on structure and electrochenlical properties ofP2 NaxCo02 were investigated and discussed.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade : Hydrogen Economy Initiative Serbia",
journal = "Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018",
title = "Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance",
pages = "98-98",
url = "https://hdl.handle.net/21.15107/rcub_dais_4572"
}

Milović, M., Jugović, D., Mitrić, M., Popović, M., Rakočević, Z.,& Uskoković, D.. (2018). Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance. in Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 98-98.
https://hdl.handle.net/21.15107/rcub_dais_4572

Milović M, Jugović D, Mitrić M, Popović M, Rakočević Z, Uskoković D. Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance. in Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018. 2018;:98-98.
https://hdl.handle.net/21.15107/rcub_dais_4572 .

Milović, Miloš, Jugović, Dragana, Mitrić, Miodrag, Popović, Maja, Rakočević, Zlatko, Uskoković, Dragan, "Fluorination of sodium cobalt oxide: effects on structure and electrochemical performance" in Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018 (2018):98-98,
https://hdl.handle.net/21.15107/rcub_dais_4572 .

TY  - CONF
AU  - Marković, Smilja
AU  - Stojković Simatović, Ivana
AU  - Ahmetović, Sanita
AU  - Veselinović, Ljiljana
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Škapin, Srečo Davor
AU  - Uskoković, Dragan
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4561
AB  - ZnO/CTAB powder was prepared by microwave processing of a precipitate with the aid of cetyltrimethylammonium bromide (CTAB). The effects of CTAB on the crystal structure, morphology, optical and photo(electro)catalytic properties of ZnO particles were studied. The results showed that CTAB did not influenced crystal structure or phase purity of ZnO. However, even low concentration of CTAB vary particles morphology; cone-like particles were prepared by processing without CTAB, while a mixture of spheroidal and plate-like ZnO particles were produced when 0.001 M CTAB was used. It was found that synthesized ZnO powders have 0.10 eV lower band gap energy then bulk ZnO (3.37 eV). A high photocatalytic activity for decolorization of methylene blue water solution was established after 2 h of sunlight irradiation; efficiency was 100 and 67% for ZnO/CTAB and ZnO, respectively. Electrochemical test showed faster oxygen evolution kinetics when ZnO/CTAB was used as anode material. Enhanced photo(electro)catalytic activities of ZnO/CTAB particles are attributed to better absorption of visible light due to both, larger dimensions and surface sensitization by CTAB.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
T1  - Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing
SP  - 237
EP  - 240
UR  - https://hdl.handle.net/21.15107/rcub_dais_4561
ER  - 

@conference{
author = "Marković, Smilja and Stojković Simatović, Ivana and Ahmetović, Sanita and Veselinović, Ljiljana and Stojadinović, Stevan and Rac, Vladislav and Škapin, Srečo Davor and Uskoković, Dragan",
year = "2018",
abstract = "ZnO/CTAB powder was prepared by microwave processing of a precipitate with the aid of cetyltrimethylammonium bromide (CTAB). The effects of CTAB on the crystal structure, morphology, optical and photo(electro)catalytic properties of ZnO particles were studied. The results showed that CTAB did not influenced crystal structure or phase purity of ZnO. However, even low concentration of CTAB vary particles morphology; cone-like particles were prepared by processing without CTAB, while a mixture of spheroidal and plate-like ZnO particles were produced when 0.001 M CTAB was used. It was found that synthesized ZnO powders have 0.10 eV lower band gap energy then bulk ZnO (3.37 eV). A high photocatalytic activity for decolorization of methylene blue water solution was established after 2 h of sunlight irradiation; efficiency was 100 and 67% for ZnO/CTAB and ZnO, respectively. Electrochemical test showed faster oxygen evolution kinetics when ZnO/CTAB was used as anode material. Enhanced photo(electro)catalytic activities of ZnO/CTAB particles are attributed to better absorption of visible light due to both, larger dimensions and surface sensitization by CTAB.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade",
title = "Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing",
pages = "237-240",
url = "https://hdl.handle.net/21.15107/rcub_dais_4561"
}

Marković, S., Stojković Simatović, I., Ahmetović, S., Veselinović, L., Stojadinović, S., Rac, V., Škapin, S. D.,& Uskoković, D.. (2018). Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing. in Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
Belgrade : Society of Physical Chemists of Serbia., 237-240.
https://hdl.handle.net/21.15107/rcub_dais_4561

Marković S, Stojković Simatović I, Ahmetović S, Veselinović L, Stojadinović S, Rac V, Škapin SD, Uskoković D. Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing. in Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade. 2018;:237-240.
https://hdl.handle.net/21.15107/rcub_dais_4561 .

Marković, Smilja, Stojković Simatović, Ivana, Ahmetović, Sanita, Veselinović, Ljiljana, Stojadinović, Stevan, Rac, Vladislav, Škapin, Srečo Davor, Uskoković, Dragan, "Enhanced photo(electro)catalytic properties of ZnO particles synthesized by CTAB-assisted microwave processing" in Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade (2018):237-240,
https://hdl.handle.net/21.15107/rcub_dais_4561 .